Answer:
social constructs
Explanation:
however it is not true that gender is actually a social construct
________ is a process by which large ingested molecules are mechanically and chemically broken down to produce basic nutrients that can be absorbed across the wall of the GI tract.
Answer:
Digestion is a process by which large ingested molecules are mechanically and chemically broken down to produce basic nutrients that can be absorbed across the wall of the GI tract.
Explanation:
Digestion is the process by which large molecules of food are broken down into molecules small enough to be absorbed by the body's cells, that is, through this process the body obtains nutrients from food to function properly. The organs that perform this function are part of the digestive system. Digestion and absorption takes place in the gastrointestinal tract (GI track), during its passage through this tube, food remains 3 to 5 hours in the stomach, 4 hours in its movement along the small intestine and 6 to 20 hours in the large intestine .
In some individuals, vegetables such as _____ appear to "turn off" genes that promote the oxidative stress and inflammation that can damage DNA.
Answer:
Answer is Cabbage.
Explanation:
It should be noted that the turning on and off of the genes is known as the gene regulation. And this process is considered to be very important because it helps the cell to react quickly or promptly to the changes in the environment.
Oxidative stress usually occurs when there is imbalance the free radicals production and the ability of the body to fight against their damaging effects or possibly repair their damaging effects. While inflammation is considered to be the reddening or swollen occurring in some parts of the body.
In this aspect, cabbage , as an example of vegetable help to turn-off the genes, i.e prevent the genes that can cause the oxidative stress or inflammation from performing their damaging activities.
One of the most important classes of proteins is enzymes, which help speed up necessary biochemical reactions that take place inside the cell. Some of these critical biochemical reactions include building larger molecules from smaller components (such as occurs during DNA replication or synthesis of microtubules) and breaking down larger molecules into smaller components (such as when harvesting chemical energy from nutrient molecules). Whatever the cellular process may be, it is almost sure to involve proteins. Just as the cell’s genome describes its full complement of DNA, a cell’s ______________ is its full
Answer:
Whatever the cellular process may be, it is almost sure to involve proteins. Just as the cell’s genome describes its full complement of DNA, a cell’s proteome is its full complement of proteins.
Explanation:
Proteome serves as the repository of proteins for the DNA that stores the most crucial information regarding the structure, build, functioning, etc., of the entire body. Thus, the cellular processes that happen within our body cannot taken place in the absence of proteins.The molecule which distinguishes living systems from nonliving and serve as hereditary material is called __.
Answer: deoxyribonucleic acid (DNA)
Explanation:
DNA is the main hereditary material that distinguishes living from non-living things.
It is so because its replication i.e DNA replication can ONLY occur in the cell of a living organism. That is why even virus replicate it's DNA only in a living host not else where.
So, DNA is the answer
Water-soluble hormones affect target cells by binding to __________. View Available Hint(s) Water-soluble hormones affect target cells by binding to __________. adenylate cyclase cytoplasmic receptors plasma membrane receptors cAMP protein kinases
Answer:
plasma membrane receptors
Explanation:
Water-soluble hormones such as amine and peptide hormones cannot cross the hydrophobic core of the plasma membranes of their target cells. Therefore, these hormones have cell surface receptors present on the surface of their target cells. Binding of water-soluble hormones to their respective plasma membrane receptors on the target cells stimulates the generation of a second messenger which in turn brings about the desired changes in the cells.
For example, binding of some water-soluble hormones to their plasma membrane receptors stimulates the formation of cAMP inside the target cells. The cAMP serves as the second messenger and activates the protein kinases which in turn activate cellular proteins involved in the generation of the desired response.
Water-soluble hormones bind to plasma membrane receptors, which sets off a cascade involving the activation of adenylate cyclase and the production of cAMP, leading to cellular responses through protein kinases.
Explanation:Water-soluble hormones affect target cells by binding to plasma membrane receptors. When a water-soluble hormone binds to its receptor, it activates a G-protein that is associated with the receptor on the cell membrane. This then activates an enzyme called adenylate cyclase, which converts ATP to cyclic AMP (cAMP), the second messenger. cAMP activates enzymes called protein kinases, which in turn phosphorylate various cellular proteins, leading to the desired cellular response.
Refer to Animation: Base Pairing and Stacking. When we consider the orientations of the two strands of DNA that make up a double helix, we see that they are:
When we consider the orientations of the two strands of DNA that make up a double helix, we see that they are:
A. parallel.
B. antiparallel.
C. mirror images.
Answer:
B. antiparallel.
Explanation:
A single DNA strand has two distinct ends. These are the 3' and 5' ends. At the 3' end, the 3' OH of the pentose sugar is present freely and is not involved in phosphodiester bond. The 5' end of DNA has a free phosphate group. A DNA double helix has two DNA strands. These two DNA strands of a double helix are anti-parallel in nature. This means that the 3' end of one DNA strand is present opposite to the 5' end of another DNA strand.
...glutamine-glutamine-glutamine...
....serine-serine-serine......
Which of the following messenger RNA sequences could code for both of the two amino acid sequences?
Answer:
AGCAGCAGCAGC
Explanation:
Messenger RNA (mRNA) is the product of transcription, which is made by synthesizing a complementary strand of the DNA template. The mRNA is a template used to synthesis amino acids during the second process of protein synthesis (translation).
mRNA are read in the ribosomes in a group of three nucleotide sequences called CODON. This codon (triplet nucleotide on mRNA) specifies a particular amino acid. There are 64 possible combinations of codons in the genome for the 20 amino acids. Due to this, the genome/genetic code exhibits a phenomenon called DEGENERACY. Degeneracy is a phenomenon whereby more than one codon specifies a particular amino acid.
The possible CODONS that specify the amino acids given in the question are:
Serine: AGC, AGU, UCA, UCC, UCG, UCU
Glutamine: CAA, CAG
Hence, looking at this codons/nucleotide sequences, we would realize that combining the sequence;
AGCAGCAGCAGC; will produce a serine amino acid sequence, while skipping the first two nucleotides (A and G) and starting from nucleotide C, we will have CAG which codes for Glutamine amino acid repeated three times.
Hence, AGCAGCAGCAGC is the possible mRNA nucleotide sequence that can produce both amino acid sequence.
Final answer:
The question asks for mRNA sequences that could code for glutamine and serine. Glutamine is coded by GAA and GAG, while serine is coded by UCA, UCG, UCU, and UCC. The options given do not match these codons, so the correct mRNA sequence would be any combination of codons for glutamine and serine.
Explanation:
The student's question relates to the genetic code and how sequences of nucleotides in messenger RNA (mRNA) correspond to the amino acid sequences that make up proteins. To answer which mRNA sequences could code for the amino acid sequences of glutamine (Gln) and serine (Ser), we need to refer to the codon table that matches mRNA triplets with amino acids. Glutamine is coded by the mRNA codons GAA and GAG, while serine is coded by the mRNA codons UCA, UCG, UCU, and UCC.
None of the options provided (a. valine and isoleucine, b. asparagine and serine, c. glutamic acid and arginine, d. tryptophan and methionine) match the codons for glutamine or serine. Therefore, the correct mRNA sequence could be any combination of the codons for Gln and Ser, such as CAAGAG for a Glutamine-Glutamine-Glutamine sequence and UCUUCU for a Serine-Serine-Serine sequence.
Additionally, understanding how changes in the mRNA sequence affect amino acid sequences is critical. For example, inserting an arginine codon between certain amino acids would alter the resulting protein structure, potentially affecting its function.
Archaea _______. a. are most genetically related to bacteria.
b.contain a nucleus.
c. cannot cause disease in humans.
d. lack peptidoglycan in their cell wall.
Answer:
D) lack peptidoglycan in their cell wall.
Explanation:
Archaea is a group of unicellular prokaryotes which shows the characteristics of the eukaryotes and eubacteria.
The Archaea since prokaryotic in origin lack the well-defined nucleus and organelles and resemble the bacteria but they differ from the bacteria in the composition of the cell wall.
The cell wall of the bacteria contains the peptidoglycan layer in the cell wall but the archaea lack the peptidoglycan but posses peptidoglycan like a molecule layer called pseudo-peptidoglycan layer with different sugar.
Thus, Option-D is the correct answer.
Archaea are single-celled microorganisms that are genetically related to bacteria but differ in their cell wall composition. Not all archaea can cause diseases in humans.
Explanation:Archaea are most genetically related to bacteria. They are a group of single-celled microorganisms that lack a nucleus and contain a cell wall without peptidoglycan. While some archaea can be found in extreme environments, not all of them are pathogenic and can cause disease in humans.
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A student needs to prepare 250 mL of a 0.550 M aqueous solution of sucrose, C 12 H 22 O 11 ( aq ) , which is used frequently in biological experiments?
Answer:
Dissolve 47.025 grams of sucrose in enough water to produce 250 ml of solution.
Explanation:
You need to prepare 250. mL of a 0.550 M aqueous solution of sucrose, C12H22O11 (aq),
which is used frequently in biological experiments.
Based on your answer above, what is the value of x?
Solution:
A 0.550 M aqueous solution contains 0.550 mole of sucrose per liter of solution.
250 ml = 0.250 liter
Thus a 0.250 liter of a 0.550 M aqueous solution of sucrose contains 0.250 * 0.550 = 0.1375 mole of sucrose
Recall:
Mass = number of moles * mass of 1 mole
mass of 1 mole of C12H22O11
= 12(12) + 1(22) + 16(11)
= 144 + 22 + 176
= 342 grams
Mass = 0.1375 * 342 = 47.025 grams of sucrose.
Dissolve 47.025 grams of sucrose in enough water to produce 250 ml of solution.
When making a solution of a specific volume or quantity, it is important that the solvent is added to the solute when it has completely dissolved. That is the solvent is added first to the vessel
The correct responses to the questions are;
C. Volumetric flaskMeasure out x g of solid sucrose on a balancex is approximately 47.066 gMix a small amount of water with the solute to dissolve it, then fill with water to the 250-mL markThe reason the above options are correct is as follows:
The giving parameter are;
The volume of solution to be prepared, V = 250 mL = 0.250 L
The concentration of the solution to be prepared, n = 0.550 M
Chemical formula of the compound, sucrose, to be prepared = C₁₂H₂₂O₁₁
Question: Base on online research, parts of the question appear missing and are therefore, included here as follows;
a. The type of glassware to be used to make the solution, for higher accuracy
A. A beaker
B. Erlenmeyer flask (conical flask)
C. Volumetric flask
Solution:
The vessel used to make solutions of accurate volume in the lab is the volumetric flask, which is option C.
C. Volumetric flask
A volumetric flask has calibration for making accurate or precise measurement of the liquid it contains
b. Required:
How the amount of solute required is to be corrected:
Solution:
Sucrose is a white crystalline solid substance that can be transferred with the use of spatula unto a balance where the mass is measured
Therefore, the correct response is;
Measure out x g of solid sucrose on a balance
c. Required:
The value of x in the x gram of sucrose to b measured
Solution;
The correct amount of solute, x, to be measured is found as follows
The mass of sucrose required, m = n × V × MM
Where;
MM = The molar mass of the sucrose = 342.2965 g/mol
x = 0.550 mol/L × 0.250 L × 342.2965 g/mol ≈ 47.066 g
x ≈ 47.066 g
d. Required:
The method by which the solute and the solvent are to be mixed in the container
Solution:
The method by which the solute and the solvent are mixed so that the volume of the total mixture is 250 mL is as follows;
It is important to add water unto the solute already in the flask so that the total volume of the solvent and solute combined is 250 mL
However, it is also important to first dissolve the solute in a small amount of water, so as to provide enough space for swirling of the liquid without spilling it
When all the sucrose has dissolved, water can then be added to fill the flack to the 250 mL mark
Therefore, the correct option is to mix a small amount of water with the solute to dissolve it, then fill with water to the 250-mL mark.
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Many organisms in an ecosystem compete with each other for resources. What might different species of trees in a forest ecosystem compete for? A. Producers B. Water C. Predators D. All of these
Answer:
B. Water.....
Answer: Water
Explanation: Why would trees compete for predators or producers? That doesn't make sense
Two eukaryotic proteins are identical except for one domain in each protein, and these two domains are completely different from each other. Which of the following processes is most likely to have contributed to this difference?
Answer:
Alternative splicing.
Explanation:
The eukaryotes translation process requires two more step known as polyadenylation and capping. The transcription and translation occurs in the separate compartment.
The eukaryotes genome consists of both the exons as well as introns. The introns need to be excise out and exons join together in the process known as alternative splicing. This alternative splicing is responsible for the formation of the different protein.
Thus, the answer is alternative splicing.
A congenital condition of immunodeficiency that results from defective development of the pharyngeal pouch system and presents with cardiac anomalies, hypoplastic thymus, and hypocalcemia is ______
Answer: DiGeorge syndrome (DGS)
Explanation: It is caused by abnormal development of certain cells during fetal development.
It is a primary immunodeficiency disorder caused by the mutation in chromosome number 22.
Testing your ability to recall information you have just studied improves your long-term retention of that information. Psychologists have referred to this as ___________.
A) SQ3R.
B) introspection.
C) the testing effect.
D) positive psychology.
Answer: The testing effect
Explanation:
The testing effect can be generally used to find out that long-term memory is generally increased when a bit of the (adapting)learning period is spend towards retrieving what is to be retained in the brain.
This effect is often referred as practice testing or retrieval practice. This is required to test what is retained in the brain which was studied over a long time back.
This effect is known as the testing effect.
Final answer:
The concept that describes the improvement in long-term retention due to actively recalling studied information is known as C) the testing effect, which is part of effective learning strategies and metacognition.
Explanation:
The phenomenon where testing your ability to recall information you have just studied improves your long-term retention of that information is referred to as the testing effect. This concept is grounded in the idea that retrieval is one of the most powerful enhancements to learning, as highlighted in the work of Roediger and Butler (2013). It is more beneficial than simply reviewing the material because it involves the active act of getting information out of long-term memory storage and back into conscious awareness. This self-testing not only helps you to understand if you truly know the material but also makes learning more durable over time. In contrast to becoming overconfident from merely reviewing notes, the testing effect provides a more accurate assessment of one's knowledge, tapping into metacognition.
When conductors with _______ charge touch, electrons flow from the object that has a greater negative charge to the object that has less negative charge in the process of ______
When conductors with negative charge touch, electrons flow from the object that has a greater negative charge to the object that has less negative charge in the process of conduction.
Explanation:Electronic conductivity is defined as the exchange of charges between two bodies that are conductors by means of exchange and sharing of electrons between themselves.
Electrons are actually responsible for the existence of negative charges in the electricity, and presence of electrons make a body negatively charged and absence of electrons make them positive charged.
When a more negatively charged body touches a less negativity charged body, the electrons from more negatively charged body flows to the body with less negatively charged one, because of more electron density.
When conductors with opposite charge touch, electrons flow from the object that has a greater negative charge to the object that has less negative charge in the process of charge transfer.
Explanation:When conductors with opposite charge touch, electrons flow from the object that has a greater negative charge to the object that has less negative charge in the process of charge transfer. Conductors are materials in which charges can move freely. If a conductor with excess negative charge comes into contact with a conductor with excess positive charge, electrons will flow from the conductor with more negative charge to the conductor with less negative charge until the charges are in equilibrium.
In a population of snails, 64% are found to have a coil pattern determined by the dominant allele "C." Calculate the frequency of the recessive snails in the population, as well as the frequencies of the heterozygous and homozygous dominant snails. Also, what is the frequency of the coil "C" allele, and the recessive noncoil pattern allele "c"?
Answer and Explanation:
Data:
64% of snails in the population are found to have a coil pattern determined by the dominant allele "C".This 64% of the population is composed of individuals with genotype CC and Cc. This percentage equals a frequency of 0.64.
36% of the population is composed of homozygote individuals expressing the recessive trait, cc. This percentage equals a genotypic frequency of 0.36.
If CC=p² and cc=q², then:
cc=q²=0,36
√cc=√0.36=0.6
c=0.6
0.6 is the allelic frequency for the recessive trait.
Considering that the sum of frequencies of the dominant allele plus the recessive allele equals one, then C + c = 1.
If we know the frequency of the recessive allele c, but not the frequency of the dominant allele, we can obtain it by clearing the equation. This is
C + c = 1
C + 0.6 = 1
1 - 0.6 = C
1 - 0.6 = 0.4
So the frequency of the dominant allele, C is 0.4.
The genotypic frequency of the heterozygous is 2pq=2Cc=2x0.4x0.6= 0.48
So the genotyic frequency for the heterozygous is 0.48
So, up to now, we have:
64% of the population is composed of individuals with genotype CC and Cc. This percentage equals a frequency of 0.64.36% of the population is composed of homozygote individuals for the recessive trait, cc. This percentage equals the genotypic frequency for the recessive trait, 0.36. The allelic frequency for the recessive allele is 0.6The allelic frequency for the dominant alelle is 0.4The dominant genotypic frequency is 0.16The heterozygous genotypic frequency is 0.48The proportion of individuals expressing the dominant trait is 0.16 + 0.48 = 0.64 = 64%Which of the following places the steps of the Gram stain in the correct order? 1-Alcohol-acetone 2-Crystal violet 3-Safranin 4-Iodine
Answer: Gram staining is arranged in the following order;
1) Crystal violet
2) iodine
3) Alcohol-acetone
4) safranin
Explanation:
Applying primary stain to a heat fixed smear of a bacterial culture
Then you add iodine which binds the crystal violet and traps it in the cell. After you decolourise with ethanol finally counter shade with safranin
The correct order for the Gram stain process is: crystal violet, iodine, alcohol-acetone, and safranin. This method is crucial for classifying bacteria into Gram-positive and Gram-negative groups.
Explanation:The Gram Stain is a differential staining technique used to classify bacteria into two major groups: Gram-positive and Gram-negative. The correct order of the steps in this process is:
Crystal violetIodineAlcohol-acetoneSafraninThis sequence is vital. First, the bacterial smear is stained with crystal violet, then it's treated with iodine, a mordant that forms an insoluble complex with crystal violet, which can subsequently be removed with alcohol or acetone. Finally, safranin, a counterstain, is applied that stains Gram-negative bacteria.
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Lynx feed on rabbits, and the growth curves for these two species fluctuate together. This relationship is an example of a(n) Select one:
a. S-shaped growth curve.
b. J-shaped growth curve.
c. irregular fluctuations. tightly linked cycle.
Answer:
Option D, tightly linked
Explanation:
The population of both rabbit and Lynx is tightly linked which means that if the population of rabbit is affected negatively, the population of Lynx will also get affected negatively.
In general, Lynx gets its nutrition from rabbit by feeding on them when they are in sufficient number. When the rabbits become scarce, Lynx starts feeding on alternative food sources such as mice, carrion etc. but these food type cannot provide sufficient nourishment to the Lynx and hence the population of Lynx also reduces as some of them die because of starvation while the remaining move to different areas in search of food.
Hence, option D is correct
The growth curves for lynx and rabbits that fluctuate together represent predator-prey dynamics, with lynx being the predator and rabbits the prey. This tightly linked cycle of population growth and decline represents a classic example of predator-prey interaction, best exemplified by the historical cycling patterns of lynx and snowshoe hares in Northern Ontario.
Explanation:The relationship wherein lynx feed on rabbits, and their growth curves fluctuate together, exemplifies predator-prey dynamics. These fluctuations are tightly linked cycles where the prey population (rabbits) increases leading to a subsequent increase in the predator population (lynx). This is followed by a decline in the prey population due to increased predation, which in turn causes a decline in the predator population due to food scarcity. Hence, the correct answer is not the S-shaped or J-shaped growth curve, nor irregular fluctuations, but rather a tightly linked cycle of respective population sizes of prey and predators.
These cycles are typically observed in wildlife population studies, such as the historical pattern of cycling between lynx and snowshoe hares in Northern Ontario, which has been documented through nearly 200 years of trapping data. The approximately 10-year cycle, with the lynx population lagging 1-2 years behind the hare population, demonstrates how interconnected and dependent these populations are on each other's numbers for their survival and growth rates.
The irrational suspicion or hatred of a particular group, race, religion, or sexual orientation is ______.
Answer:
Prejudice
Explanation:
When someone holds a certain negative feeling against a person due to a perceived notion against the entire group the person is a member of then such an affective feeling is called as prejudice.The unfavourable opinion against a person usually is associated based on the political affiliation of the person, sexual orientation, race, religion, caste, beliefs, age etc.The irrational suspicion or hatered is not based on any actual experience of the person but merely due to a preconcieved idea and thus, holding such an opinion is not considered to be fair. The unfavourable feeling is usually considered as illogical and hence, it is usually advised that prejudice should not exist in the society.How many genes code for hemoglobin?
Answer:
Four
Explanation:
Like all proteins, the "blueprint" for hemoglobin exists in DNA.
Answer:
Four genes
Explanation:
Similar to all proteins, DNA makes up hemoglobin (the material that makes up genes). Individuals have four genes that code for the alpha protein, or alpha chain.
The speedy nervous system zips messages by way of neurotransmitters. Endocrine messages, however, are delivered more slowly because hormones travel throughA. myelinated neurons.B. the bloodstream.C. glial cells.D. interneurons.
Answer:
B) the bloodstream
Explanation:
In multicellular organisms, the cells of the organisms are interconnected and communicate with each other through the secreted chemicals. When the communication takes place between distant cells then the body releases the chemicals called hormones.
The hormones reach distant sites through the bloodstream and act on the target site. This signaling communication is known as the endocrine signaling in which the endocrine glands secrete the chemicals into the bloodstream.
Thus, Option-B is the correct answer.
Endocrine messages are slower than nervous system messages as hormones travel through the bloodstream, whereas neural messages use rapid electrical and chemical signals.
Explanation:The nervous system transmits messages rapidly through electrical signals and chemical neurotransmitters, with the fastest nerve impulses reaching speeds over 100 meters per second. In contrast, endocrine messages are delivered more slowly because hormones travel through the bloodstream. Unlike the immediate action of neurotransmitters which act locally and quickly, hormones are secreted into the blood by endocrine glands and are broadcast to all cells in the body, acting over a longer distance and time frame to induce cellular response.
Match the following. Drag and drop each organizational level so that it properly matches up with its description/term. Each term reflects a component of the nervous system.
1. Organ level :
2. Cellular level :
3. Chemical level :
4. Tissue level :
5. Organ system level :
A. Brain
B. Neurons
C. Neurotransmitters
D. Neurons and neuroglial cells
E.Brain combined with the spinal cord and spinal nerves
Answer: A. Brain - Organ level
B. Neurons - Cellular level
C. Neurotransmitters - Chemical level
D. Neurons and neuroglial cells - Tissue level
E.Brain combined with the spinal cord and spinal nerves - Organ System level
Explanation: There are five levels of organisation of life; cell, tissue, organ, system and organism.
The smallest unit is cell. Neurons are nerve cells.
Aggregation of cells forms a tissue. Neurons and neuroglial cells aggregate to form nervous tissues and are hence at tissue level.
Aggregation of tissues forms an organ. Brain is an example of organ. It is formed from aggregation of nervous tissues.
Tissues aggregate to form organs while aggregation of organs constitute a system. The nervous system consist of brain combined with spinal cord and spinal nerves.
The nervous system release chemicals called neurotransmitters.
A woman in her 60s is rushed to the emergency department (ED) after having lost consciousness at a Singing Christmas Tree event. The emergency medical technician (EMT) reports that in addition to losing consciousness, the woman was tachycardic (~100 bpm), warm to the touch and diaphoretic (sweaty). During the physical exam, the patient reported that she had not been feeling well lately, but was not taking medications, had no recent surgeries, and has not been diagnosed with anything. As time passed she slowly became a little more coherent and her heartrate began to normalize, but she suddenly vomited on the floor. Rapid blood tests reveal hypoglycemia (reduced blood glucose).What is wrong with the patient?A. she forgot to eatB. she walked to the concert and was badly out of shapeC. she had a tumor causing over-secretion of insulinD. she was taking over-the-counter supplements
The woman's symptoms and blood test indicating hypoglycemia suggest she may have a tumour like insulinoma, which leads to over-secretion of insulin and reduced levels of blood glucose.
Explanation:Based on the presented symptoms and the result of the rapid blood test, which showed hypoglycemia (low blood sugar), the patient might be suffering from a condition like an insulinoma. Insulinoma is a type of tumor that causes over-secretion of insulin, as suggested by C. This condition can cause an excessive amount of insulin to be released, causing diminished glucose in the blood. The initial symptoms of hypoglycemia may often include feeling unwell, tiredness, and confusion. The later stages may include tachycardia (increased heart rate), sweating (diaphoresis), and being warm to the touch. A sudden loss of consciousness can also occur. If the patient began to feel better after some time, it might have been because her blood glucose levels started to recover naturally, but vomiting can be another symptom of severe hypoglycemia.
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What is the function of this membrane protein? A molecular view of the plasma membrane. There are two layers of phospholipids and two identical transmembrane proteins embedded in the phospholipid. The first protein has a gate that is closed and a site in the ECF where a ligand can bind. The second proteins has a ligand already bound to it and it's gate is open. What is the function of this membrane protein? a) to form the bilayer of the membrane b) linker protein c) receptor d)enzyme.
Answer: Option C (receptor)
Explanation:
The membrane protein serves as a receptor which binds to the endogenous ligand (a chemical or ion messenger) on the cell membrane triggering the opening of the cell membrane for onward passage of signals or ions into the cell. This process is called signal transduction.
The summary of functions of the membrane protein is to send the signal onward, increases the effect of a single chemical messenger (ligand), and synthesize the signal into another biochemical process.
The function of the membrane proteins described is that of a receptor. They bind to specific molecules, known as ligands, in the extracellular fluid (ECF). When a ligand binds to the receptor, it triggers a response within the cell.
Explanation:The membrane proteins described in the question are functioning as receptors. Receptors are membrane proteins that bind to specific ligands (molecules) that trigger a physiological response inside the cell. The transmembrane proteins in the scenario described bind to a ligand in the extracellular fluid (ECF) and upon binding, the gate opens. This typically allows ions or other molecules to enter the cell, initiating a chemical response within the cell.
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A fatty acid contains primarily carbon and hydrogen atoms, and its hydrocarbon tail is very hydrophobic. What kind of interaction can occur between hydrocarbon tails of fatty acids?
Answer:
Hydrophobic interaction.
Explanation:
On the basis of the polarity and the dissolution of water, the molecules can be classified into the hydrophilic and hydrophobic molecules. The hydrophobic molecules can easily dissolve in the non polar solvents.
The hydrophobic interaction is important that exist between the non polar molecules. The hydrophobic interaction plays an important role in the biological system as the lipids of the cell membrane are assisted together with the hydrophobic interaction. The hydrocarbon tail is non polar molecules that contains hydrophobic interaction within it.
Thus, the correct answer is hydrophobic interaction.
Did the Florida Panther become endangered because of natural selection, genetic drift, or gene flow?
Answer:
ALL OF THE ABOVE
Explanation:
Genetic Drift are the changes in allele frequency of a population that result from RANDOM survival or reproduction of individuals with certain characteristics. Survival or reproduction of those individuals in the face of some environmental change is a matter of LUCK or CHANCE, not because of their phenotype or genotype.
While in Natural selection, the environmental events that affect a population are likely random, but the survival or reproduction of the individuals depends on their phenotypes and genotypes.
Meanwhile, Gene flow is the movement of genes into or out of a population. Low gen flow can lead to low genetic diversity.
Low population which can cause low genetic diversity, poor habitat conditions and habitat loss, road deaths, and commercial development in panther range are constant threats to the Florida Panther's survival.
All these causes are related and therefore affects the Florida Panther.
Starting from a single individual, what is the size of a population of bacteria that reproduce by binary fission every 20 minutes at the end of a 2-hour time period? (Assume unlimited resources and no mortality.)
A) 6
B) 18
C) 128
D) 512
E) 1,024
Answer:
C) 128
Explanation:
In binary fission each bacterial cell will divide into two parts.
1. Since the bacteria divides divides after every 20 min , We have to find the number of division in two hours two hour(2x60=120 min) which will be;
120÷20=6
It will undergo 6 divisions.
2. To calculate the number of bacteria at the end of 2 hours
Bacteria in the beginning x 2∧ Number of division
1× 2∧6= 128 Bacteria
The size of a population of bacteria that reproduce by binary fission every 20 minutes starting from a single individual and lasting for 2 hours would be 64.
There are 120 minutes in a 2 hour period.
Starting at 0 minutes with 1 individual
After 20 minutes, there will be 2 individuals
After 40 minutes, there will be 4 individuals
after 60 minutes, 8 individuals
After 80 minutes, 16 individuals
After 100 minutes, 32 individuals
After 120 minutes. 64 individuals
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Describe similarities and differences between jonas's family dwelling and the living area at the annex.
The similarities between Jonas's family dwelling and the living area at the annex are that both spaces are cramped and lacking in privacy. However, there are also differences between the two. Jonas's family dwelling is described as being in short supply and families might find themselves occupying only two or three rooms, while the living area at the annex is an experiment in living apart.
Explanation:The similarities between Jonas's family dwelling and the living area at the annex are that both spaces are cramped and lacking in privacy. In both places, everyday activities determine the organization of space. However, there are also differences between the two. Jonas's family dwelling is described as being in short supply and families might find themselves occupying only two or three rooms. On the other hand, the living area at the annex is an experiment in living apart, but not too far apart, from conformist neighbors.
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Jonas's family dwelling and the living area at the annex have similarities in cramped living spaces and shared activities, but differ in the presence of separate rooms and a kitchen in the annex.
Explanation:Jonas's family dwelling and the living area in the annex share some similarities and differences.
Similarities:
Both living areas are cramped and have limited space.Cooking, eating, and socializing happen in the same space in both places.Separate areas may be reserved for sleeping and visiting, but they are also cramped.Differences:
The annex has separate rooms for different activities like sleeping, bathing, eating, and socializing, while Jonas's family dwelling does not.Jonas's family dwelling does not have a room for cooking, while the annex has a kitchen.The annex has a primary bedroom for a married couple, while Jonas's family dwelling does not have separate bedrooms.Learn more about differences and similarities between Jonas's family dwelling and the living area at the annex here:https://brainly.com/question/19610855
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Which of the following would NOT increase (whole body) oxygen consumption during recovery from exercise and increase excess post-exercise oxygen consumption (EPOC)?
A) high blood levels of hormones (i.e., epinephrine)B) None of these answers is trueC) elevated body temperature above normalD) high intensity of exercise
Answer:
(B) None of the answers are true...
Explanation:
(A) is wrong because the high levels of epinephrine promote activation of sympathetic nervous system that'll ultimately increase oxygen consumption.
(C) Elevated temperatures of body require immediate cooling that's why breathing rate gets high and ultimately the oxygen consumption.
(D) We all know that a vigorous dose of exercise always increases your bodies oxygen consumption.
The answer to the question is B) None of these answers is true. All listed factors such as high blood levels of hormones, elevated body temperature, and high-intensity exercise contribute to increased excess post-exercise oxygen consumption (EPOC).
Explanation:The question asks which factor would NOT increase oxygen consumption during recovery from exercise, otherwise known as excess post-exercise oxygen consumption (EPOC). While high blood levels of hormones like epinephrine, elevated body temperature, and high-intensity exercise all contribute to increased EPOC, none of the factors listed in the options would decrease EPOC. Hormones such as epinephrine and increased body temperature can shift the oxygen-hemoglobin saturation/disassociation curve, facilitating greater oxygen delivery and utilization. Higher intensity exercise also results in increased EPOC due to the higher demands placed on the body for energy production and recovery. Therefore, the answer is B) None of these answers is true, as all other options would increase EPOC.
The changing aspects of an individual’s sexual attitudes, behaviors, feelings, and roles can be described by the term ________. a. sexual maturation. b. sexual life cycle. c. psychosexual development. d. psychophysiological development.
Answer:
Option C, Psychosexual Development
Explanation:
Freud has proposed five stages in his theory and each stage is associated with a satisfaction drive or instinct i.e associated with different parts of body. In his theory, a child between the ages of 0 to 1 year, sense everything by putting it in his/her mouth. This gives satisfaction to the child. When he/she grows and his/her age lies within the age bracket of 1 to 3 years, a child develops an ego against things opposing his/her instinct which is in general resolved through potty training. Between the age of 3 to 6 years, child develops feelings of jealousy, attraction, rivalry and fear. In the latency stage i.e from 6 years to up till puberty, a child focuses on developing new skill sets; play with children of same gender etc.
And in the last stage i.e from puberty to adult hood, a child experience adolescent attractions such as attraction towards opposite sex, love, relationship etc.
Hence, option C is correct
Answer:
Psychosexual development.
Explanation:
Freud was the famous psychologists and proposed different theories to explain the psychology of the humans. Freud also gave the psychoanalytic and psychosexual theory in psychology.
The psychosexual development includes the different stages of the sexual development that promotes libido in humans. The individual can show differences in the feeling, behavior, attitude and the psychical changes are also observed during the psychosexual development.
Thus, the answer is option (c).
The amount of the Earth’s Net Primary Productivity that human activity consumes, and the amount of the total ice-free land surface devoted to human activities_________.
Answer:
25% of the planetary primary productivity
75% of the ice-free land surface.
Explanation:
The researches and various studies have observed and analyzed that the amount of the Earth’s Net Primary Productivity that human activity consumed is almost 25% of the planetary primary productivity
and,
Out of all the land available on the planet Earth, Human land-uses occupies about 75% of the ice-free land surface.
Answer:
The net primary productivity may be defined as the productivity rate lefts after the gross primary productivity reduced from the respiration. The plants acts as the producer in the ecosystem.
The humans directly or indirectly depend on plants and other animals for their productivity. The humans activity nearly consumes around 75% from the ice-free land surface. Around 25% of the planetary primary productivity is used directly by the humans for their activity.