Answer:
B
Explanation:
a membrane's purpose is to protect by controlling what enters or leaves the cell
B.) to control what materials enter and leave the cell
In which location would the rate of soil erosion most likely be higher than the rate of soil formation?
The question is incomplete, options are given below:
A. A tropical area with moderate rainfall
B. A temperate forest
C. A steep slope
D. A river delta
Answer:
C. A steep slope
Explanation:
Erosion is a weathering process that causes removal of the top layer of sediments from any geological material (rock, plain area, etc) and then transports that material to another place. This process is governed by the combined action of wind, water (precipitation), gravity, and other meteorological parameters.
For this question, four options are given among which rate of erosion would be faster than the rate of soil formation for a steep slope. For a steep slope, the movement of water and wind would be stronger along with high gravitational pull as compared to the tropical area, river delta, and temperate forest. In principle, in the temperate forest, the erosion would be lowest due to the presence of plant roots that support the soil material to stay aggregated and resist against weathering.
Organic molecules that perform many functions for living things and are made up of amino acid monomers are called
Answer:
The answer is proteins.
Organic molecules constructed from amino acid monomers that perform various functions for living organisms are known as proteins. These play a diverse range of roles in living systems, providing structure, regulation, or protection, and participating in transport and storage among other things.
Explanation:The organic molecules that function in many ways for living beings and are built from amino acid monomers are called proteins. Proteins are a significant type of organic molecules and play a versatile range of roles in living systems. Composed of amino acids arranged in a linear sequence, proteins may provide structure, regulation, contractility, or protection. They may also serve in transport, storage, or be part of membranes; or they can be toxins or enzymes.
Each cell in a living system may contain thousands of different proteins, each having a unique function. The structures of proteins, similar to their functionalities, vary widely. However, they all are polymers of amino acids.
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Which of the following is NOT a way in which an enzyme can speed up the reaction that it catalyzes?
a. The active site of the enzyme can provide a microenvironment with a different pH that facilitates the reaction.
b. The active site can provide heat from the environment that raises the energy content of the substrate.
c. Binding of the substrate to the active site can stretch bonds in the substrate that need to be broken.
d. The enzyme binds a cofactor that interacts with the substrate to facilitate the reaction.
e. The binding of two substrates in the active site provides the correct orientation for them to react to form a product.
Answer:
b. The active site can provide heat from the environment that raises the energy content of the substrate.
Explanation:
Enzymes are the biocatalysts that speed up the chemical reactions occurring inside the cells by lowering down the activation energy. Activation energy is the energy required to convert the substrates from their ground state into the transition state to facilitate the formation of products.
Enzymes favor the formation of transition state at lower temperatures by lowering down the activation energy and make the reactions to occur at lower temperatures. Substrates bind to the active sites, specific binding sites on enzymes. Active sites do not channelize the energy from the surroundings to the substrates.
The exchange of segments of dna between the members of a pair of chromosomes is called:
Answer:
Chromosomal translocation
Explanation:
Segement of DNA in a chromosome is trans(ferred) located (location) to another chromosome, vice versa.
p2 + 2pq + q2 = 1
In the Hardy Weinberg formula, what algebraic term is used to find the number of HETEROZYGOUS individuals in a population?
The algebraic term in the Hardy-Weinberg formula used to find the number of heterozygous individuals is 2pq, representing the frequency of the heterozygous genotype in a population.
In the context of the Hardy-Weinberg formula (p2 + 2pq + q2 = 1), the algebraic term used to find the number of heterozygous individuals in a population is 2pq.
This term represents the frequency of the heterozygous genotype in a population. If p is the frequency of the dominant allele and q is the frequency of the recessive allele, and these allele frequencies sum to 1 (p+q=1), then 2pq quantifies the expected proportion of individuals carrying one copy of each allele, known as heterozygotes.
For example, if p = 0.4 and q = 0.6, then the expected frequency of heterozygous individuals would be calculated as 2pq, which equals 2(0.4)(0.6) = 0.48 or 48% of the population.
A closed loop allowing movement of electrical charge:
A. produces an excess accumulation of charge.
B. is called a circuit.
C. must have only one branch.
D. does not permit transfer of energy.
Explanation: A closed loop allowing movement of electrical charge is called a circuit.
Answer:
B
- One way in which a virus gains control of a cell is to direct the synthesis of new viral proteins, which include such molecules as enzymes. To do this, however, the virus must provide the cell with mRNA for the production of such proteins. Viruses can achieve this goal in one of three basic ways: (1) they can import mRNA into the cell in the form of the viral genome (2) they can allow the cell to make viral mRNA through normal cellular genetic processes by providing the cell with viral DNA (3) they can use unique mechanisms to convert their genomes into a form suitable for protein production • ex. + ssRNA virus; this type of genome essentially mimics the mRNA found in the cell • ex. DNA virus, either ds or ss, which can take advantage of normal cellular processes to produce mRNA • ex. - dsRNA virus, which uses a novel enzyme called RNA - dependent RNA transcriptase to convert its genome into + ssRNA, which can then be used for protein synthesis
Answer:
What is the question in this text?
Explanation:
Scientists are using genetic engineering to develop a wheat crop that is resistant to a particular kind of moth. How would they determine if the plants are moth-resistant?
Answer:
Moth populations should be monitored in both, normal wheat and engineered wheat
Explanation:
Genetically engineered wheat crop means that the genome of the wheat is being manipulated by the techniques of biotechnology. Gene for the resistance to moths is introduced into wheat in order for plant to become protected. Determination of resistance should be performed via monitoring of control group (normal wheat, not resistance to moth) and engineered wheat (potentially resistant) and their comparation. Moth population should be decreased in the resistance plants.
Answer and Explanation: The best way to determine whether the plants are moth resistant is to conduct a controlled experiment testing their resistance to the moths.
Regarding experimental design, the independent variable (variable being manipulated by the scientists to determine whether it has an effect) would be the genome of the wheat crop. Therefore, the scientists should have a control group that is made up of wheat that has not been genetically modified and an experimental group made up of wheat that has been genetically modified to be moth-resistant.
The dependent variable (variable that is being collected and measured) should be something that can document the health and growth of the plant, such as average plant height or average crop yield. The two groups of wheat should be grown in separate locations that have the same environment and both groups should be exposed to equal moth populations. All other environmental conditions should be the same in order to ensure that there are no confounding variables.
After a finite amount of time has passed, the scientists should conduct a variety of measurements on the growth, height, yield, and other aspects of the two wheat groups. After comparing the two groups, the scientists can then determine whether the moth-resistant genome of the experimental group was actually effective in making that group moth-resistant.
In parts of Africa where Malaria is prevalent, individuals who are heterozygous for sickle cell disease are at an advantage. This, as well as other examples of heterozygote advantage, should be most closely linked to which of the following?A. Sexual selectionB. Stabilizing selectionC. Disruptive selectionD. Directional selection
Answer:
B. Stabilizing selection
Explanation:
Stabilizing selection is a type of natural selection in which mean value of trait is favourable. It is different than disruptive selection in which extreme values are favoured over intermediate values and different than directional selection in which one extreme phenotype is favored over others.
Active transport requires select one:
a. thermal energy from the environment.
b. the initial movement of water by osmosis to develop a favorable concentration gradient.
c. cellular energy, usually in the form of atp.
d. hormonal activation of specific protein carriers.
Answer:
C
Explanation:
Active transport is against gradient.. Or uphill movement.. So we have to spend energy.. Which are in the form of ATP(adenosinetriphosphate).
Active transport process require cellular energy to transport substance up their concentration gradients across the plasma membrane. Cellular energy usually in the form of ATP. Thus, c is correct option.
What is active transport?When movement of molecules is takes place then it is called active transport.
Active transport movement is always from lower concentration to a region of higher concentration gradients. So we can say that substance are moving their own concentration gradients.
Active transport requires the signal or input of cellular energy in the form of ATP( adenosine triphosphate).
ATP is generally energy carrying molecule which are found in all living organisms. Active transport system are always sensitive to metabolic poisons because these metabolic poisons interrupt the ATP supply.
Therefore, active transport process require cellular energy to transport substance up their concentration gradients across the plasma membrane. Cellular energy usually in the form of ATP. Thus c is correct option.
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what are the products of photosynthesis ?
Answer:
The main product of photosynthesis is glucose
Hope that helped and also I will change my profile to have something different than the sonic movie because ugh it's weird
There are several small products of photosynthesis but the main product is glucose
another main product is oxygen as well
((sorry for copying stuff before))
Suppose that a genetic alteration resulted in the synthesis of cyclin-dependent kinases that no longer provided the "go" signal at the cellular checkpoint. predict the immediate outcome if this alters the normal cell life-cycle processes at the m checkpoint.
Answer:
The cyclin-dependent kinase will not signal for starting mitotic division.
Explanation:
The function of Cyclin-dependent kinase is to begin the mitotic division of cells. The distribution of equal chromosomes will be altered that would result in altered chromosome numbers in the progeny, or if the division is stopped then there would be reduction in the number of healthy cells as compared to damaged cells.
____ hormones produce detrimental and undesirable side effects (even more so in women) such as hypertension, fluid retention, decreased breast size, and a deepening of the voice.
Answer:
Corticoid harmones.
Explanation :
Corticoid harmones are
Cortisol
Aldesteron
Sex Corticoid
Answer:
Human growth hormone.
Explanation:
Human growth hormone is released by anterior pituitary gland. This hormone regulates body composition, fat metabolism, growth and development of an organism.
Deficiency or excessive production of human growth hormone can cause undesirable and detrimental side effects in both men and women. The unbalance amount of human growth hormone can cause fluid retention, deepening of voice, decreased breast size, hyper tension and heart related problems.
Thus, the hormone is human growth hormone.
Which drug can produce mild impairments in memory and must be closely monitored because of its potentially toxic effects?
Answer:
A)
Explanation:
Which of the following best describes the way that genes, chromosomes, and DNA are related?a.Chromosomes contain several genes, which are made up of sequences of DNA.b.Genes contain several chromosomes, which are made up of sequences of DNA.c.Genes contain several sequences of DNA, which are made up of chromosomes.d.Sequences of DNA contain several genes, which are made up of chromosomes.
Answer:
a. Chromosomes contain several genes, which are made up of sequences of DNA.
Explanation:
Genes are located in chromosomes. A chromosome can hold hundreds to thousands of genes. Each gene is made up of a specific sequence of DNA which determines its trait. Genes are inherited from our parents. They also determine how we look and how we function internally.
The engineer wants to change the design of the solar water heater so that it can heat water at a faster rate. What modification should he make to the design?
decrease the capacity of the pump
increase the surface area of the solar panel
increase the thickness of the tank walls
decrease the length of the cold water pipes
Answer:
C
Explanation:
the thickness prevents the process from occurring as quick
To increase the rate at which a solar water heater heats water, the engineer should increase the surface area of the solar panel.
Explanation:If an engineer wants to increase the rate at which a solar water heater heats water, the best option would be to increase the surface area of the solar panel. The surface area of the solar panel dictates how much sunlight can be absorbed and transformed into heat. By increasing this area, more sunlight can be absorbed at any given time, thus increasing the heating rate of the water. The other options will not significantly increase the heating rate. Decreasing the capacity of the pump or the length of the cold water pipes will not affect the heating rate, and increasing the thickness of the tank walls might even decrease the heating rate by adding more insulation.
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What is an acid? a substance that can donate an H+ ion a substance that is alkaline a substance that has a high pH value a substance that can accept an H+ ion
Answer:
The correct answer is "a substance that can donate an H+ ion".
Explanation:
An acid is defined as a chemical substance that neutralizes basic solutions and acts as a proton (H+ ion) donor. Most acids when are dissolved in water release a proton which can be donated to a different compound. Acids are proton donors and electron acceptors, while bases are the opposite.
Recall the discussion of mythical places in unit eight. would firefly forest be considered a mythical place? why or why not?
Answer:
i would think that the Firefly Forest could be considered a mythical place because there are mythical beings in this place according to the story.
Answer:
Yes, it can be considered a mythical place because it is a place full of fantasy and magic that does not exist but is a product of the imagination of the author who created it. It also takes elements of nature but with a tint of fiction.
How many daughter cells are created at the end of meiosis 1?
Two daughter cells are created
At the end of meiosis 1, two haploid daughter cells are created from the parental cell. Each of these then undergoes a second round of cell division, resulting in the formation of four haploid daughter cells in total.
Explanation:The process of meiosis involves two rounds of cell division and results in the production of four daughter cells. At the end of meiosis 1, two haploid daughter cells are created from a parental cell following the separation of homologous chromosomes. Each of these daughter cells then undergoes meiosis II, resulting in the formation of four haploid daughter cells altogether.
In meiosis II, the sister chromatids within the two daughter cells separate, forming four new haploid gametes. These gametes each contain just half of the original genetic material from the parental cell. Therefore, while the end cells remain diploid at the end of meiosis I, they are haploid by the end of meiosis II.
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As adults, certain species of whales possess baleen instead of teeth. baleen is used to filter the whales' diet of planktonic animals from seawater. as embryos, baleen whales possess teeth, which are later replaced by baleen. the teeth of embryonic baleen whales are evidence that
Answer:
baleen whales are descendants of toothed whales.
Embryonic teeth in baleen whales are evidence of evolutionary history, indicating that these whales descended from toothed ancestors but have adapted to filter-feeding with baleen. This is part of broader patterns of adaptation in marine life, which include various forms of feeding strategies and physical changes due to evolutionary pressures.
The teeth of embryonic baleen whales are evidence that whales evolved from toothed ancestors. These embryonic teeth are vestigial structures, which are remnants of evolutionary history; they are present in the embryo but do not develop into functional teeth for the adult whale. Instead, baleen whales develop baleen, which is a keratin-based filtration system that allows them to efficiently filter feed on planktonic animals from seawater. This transition from teeth to baleen is reflective of evolutionary adaptations to different feeding mechanisms and environments. The baleen is used in place of teeth to capture small prey in a bulk feeding strategy, distinguishing them from toothed odontocetes such as dolphins and porpoises.
Similar evolutionary adaptations are seen in other marine animals, such as certain species of sharks and rays that evolved into suspension feeders. Whale evolution is also demonstrated in physical changes, such as the vestigial pelvic bones, which indicate their terrestrial mammalian ancestry and the secondary loss of hind legs as they adapted to an aquatic lifestyle.
During conjugation what is transferred from one bacteria to the next
Answer:
Genetic material
Explanation:
Conjugation is one of the ways by which bacteria exchange their genetic material (horizontal gene transfer). Two bacterial cells must physically connect in order to perform the conjugation. The linking occurs through a pilus.
Pilus is an appendage on the surface of bacteria cell and it is also called fimbria. Pilus is filamentous, tubular and composed of oligomeric proteins-pilin.
Donor cell contain pilus that will attach to the recipient bacterial cell and induce the transfer.
The prokaryotes most likely to be found living in extreme environments such as salt ponds or hot springs are _____. the prokaryotes most likely to be found living in extreme environments such as salt ponds or hot springs are _____. bacteria archaea photoautotrophs gram-positive bacilli
Answer:
archaeabacteria ( context clues can often give the answer :)
The prokaryotes most likely to be found living in extreme environments such as salt ponds or hot springs are archaea. Archaea are a distinct group of single-celled microorganisms that are genetically and biochemically different from bacteria. They are known to thrive in extreme environments, including high temperatures, high salinity, acidic or alkaline conditions, and high-pressure environments.
Archaea have been found in various extreme environments, such as hot springs, geothermal vents, deep-sea hydrothermal vents, salt ponds, and acidic or alkaline lakes. They have unique adaptations that allow them to survive and thrive in these harsh conditions. Some archaea are thermophiles, meaning they can withstand and even require high temperatures, making them well-suited for hot springs and geothermal environments.
Therefore, the prokaryotes most likely to be found living in extreme environments such as salt ponds or hot springs are archaea.
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Please check my questions!!
I need help with these!
THANK YOU!
BRAINLIEST WILL BE GIVEN
Answer:
Explanation:
Yes, you got them all correct. GOOD JOB!!!!!!!
If you were trying to increase the metabolism of a recipient cell, what type of hormone would best help you achieve this?
Answer:
thyroxine- This hormone can increase the basal metabolic rate
triiodothyronine- It affects almost every physiological process in the body, including growth and development, metabolism, body temperature, and heart rate.
Explanation:
What maintains the secondary structure of a protein?
Answer:
hydrogen bonds
Explanation:
Proteins are folded into their secondary structure via hydrogen bonds-between the amino hydrogen and carboxyl oxygen atoms. Secondary structure is an intermediate, before proteins gets its 3D shape (conformation), tertiary and quaternary structure. Mos commonly found secondary structures of the protein are:
alpha helices-backbone N−H group forms a hydrogen bond with the backbone C=O group of the amino acidwhich is three or four residues apartbeta sheets- laterally connected polypetpide chains with two or three hydrogen bondsHydrogen bonds maintain the secondary structure of a protein by forming between amino acid residues.
Explanation:The secondary structure of a protein is maintained by hydrogen bonds. These bonds occur between the amino acid residues in the protein chain. The two main types of secondary structures are alpha helices and beta sheets.
In an alpha helix, the hydrogen bonds form between the carbonyl oxygen of one amino acid and the amino hydrogen of an amino acid four residues down the chain. This creates a stable spiral-like structure.
In beta sheets, the hydrogen bonds form between adjacent strands of the protein chain, creating a pleated sheet-like structure. The hydrogen bonding between the amino acids in both alpha helices and beta sheets helps to stabilize the overall structure of the protein.
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Which of the following processes can result in a new island population with a limited gene pool?A. artificial selectionB. gene poolC. founder effectD. bottleneck effect
The answer is C founder effect.
Which type of neuron carries impulses from sense organs to the spinal cord or brain?
A. motor neuron
B. sensory neuron
C. association neuron
Answer: Sensory Neuron
Explanation:
Sensory Neuron is defined as “a nerve cell that receives messages from the outer part of the body and carries them to the brain or spinal cord.” The outer part of the body could also be called “sense organs,” which is the phrase used in your question.
Answer:
Sensory Neuron
Explanation:
THIS IS WORTH 30 POINTS!
What conclusion can be drawn from embryological development?
A. The presence of gill slits and tails in early vertebrate embryosshows that they may share a common ancestor.
B. Many organisms have structures with no apparent function found during embryo development.
C. Insect and bird wings are similar in function but not in structure.
D. Paleontologists have used fossils to trace the evolution of the modern camel.
your anwer is c) The two types of wings share a common function (and therefore are both called ... the bird wing and insect wing did not arise from an original ancestral structure ... When the gill slits became supported by cartilaginous elements, the first set of
Which tenet of Darwin's theory of natural selection is best exemplified by the data in the graph?
The height of sorghum plants varies due to mutations.
Sorghum plants with advantageous traits are more likely to survive and reproduce.
All the sorghum plants in the region compete for sunlight.
Sorghum plants can produce more offspring than can survive.
Yea, I agree too, Sorghum plants can produce more offspring than can survive.
This map shows the amount of soil moisture (SM), which is an indicator of water availability for people living in that region. Based on the data from map, which region has the maximum risk of a water shortage?
Answer: The answer is 4
Explanation:
This map shows the amount of soil moisture (SM), which is an indicator of water availability for people living in that region. Based on the data from map region has the maximum risk of a water shortage is high.
What are the effects of water shortage?Three effects that water shortage has on a region is that farming is harder to do because the planets will die without water and then we can't get food. People also don't have drinking water or water.Another effect is that people can't use water for everyday necessities like keeping clean region 4 has the maximum risk of a water shortage.
Three affects that water shortage has on a region is that farming is harder to do because the planets will die without water and then we can't get food. People also don't have drinking water or water. Another effect is that people can't use water for everyday neccesities like keeping clean.
Therefore, This map shows the amount of soil moisture (SM), which is an indicator of water availability for people living in that region. Based on the data from map region has the maximum risk of a water shortage is high.
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