The respiratory system takes oxygen from the air and sends it from the alveoli to the circulatory system. The circulatory system carries the oxygen and glucose to your cells for energy. And lastly, the digestive system to carry the nutrients and remove the waste.
The organ system which intake oxygen into the body is respiratory system and circulatory system distribute the oxygen all over the body. The nutrients are processed and transported by the digestive system.
What is organ system?An organ system is a group of organs combined to perform one or more specific functions. There are various organs systems in our body namely respiratory system, circulatory system, digestive system, nervous system etc.
Respiratory system involves nasal part and lungs. Oxygen is up taken by this system and stores in the sir sack of lungs. Later blood is oxygenated by circulatory system and distributed throughout the body through veins.
Similarly the nutrients and water from the diet is absorbed by the digestive system including the organs from mouth to stomach. The absorbed nutrients are distributed through blood.
Finally the remaining wastes products are passed to excretory system.
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A 5 year old is consuming a daily caloric intake of 1400 calories. approximately what portion of the diet should be comprised of carbohydrates?
Answer:
normally we say 30 to 40 percent should be carbohydrates simple and complex one having a standard proportion, it may also depend upon ur health
if u have diabetes u may need to cut down sugar content of your diet
An appropriate group of animals to examine to observe a malpighian tubule would be _____.
The correct answer is: insects.
Malphigilan tubule is a structure with the function in excretion and osmoregulaton of insects, myriapods, arachnids, and tardigrades. Its structure is branchied and its function is to absorb solutes, water, and wastes from the surrounding hemolymph. The released wastes are in the form of solid nitrogenous compounds and calcium oxalate.
_____ describes what happens around the time of death
A. The cadaver dog
B. The taphonomy profile
C. Mass grave excavation
D. Excavation
the answer is D hope it helps
In eukaryotic cells, how do transcription factors act to control gene expression?
A. They remove introns from pre-mRNA.
B. They bind to regulatory regions of DNA near the genes.
C. They insert themselves into DNA near the beginning of a gene.
D. They code for the synthesis of RNA polymerase.
Answer:
B
Explanation:
They can inhibit or promote RNA polymerase depending on whether it is a repressor or activator respectively. They bind in the regulatory region on DNA, therefore, this means they will have a DNA-binding domain (DBD). They can physically block the polymerase from transcription or catalyze the acetylation or deacetylation of histone proteins.
Transcription factors in eukaryotic cells control gene expression by binding to regulatory regions of DNA near the genes.
Explanation:In eukaryotic cells, transcription factors act by binding to regulatory regions of DNA near the genes. The promoter region, which is immediately upstream of the coding sequence, is the main site where transcription factors bind. These transcription factors recruit RNA polymerase to the promoter region, allowing transcription to begin.
The lower chambers of the heart are called the _[blank]_.
atria
myocardium
septum
ventricles
The answer is ventricles.
Hope this helps.
Answer: Septum
Explanation: (picture below)
Explain why the force of gravity will allow you to extend your forearm even if the triceps brachii is not functioning
Answer:
Gravity does not depend on triceps brachii to work, it is automatic, thereby it shall enable extension of the arm.
Explanation:
Gravitational pull present on earth is a force that pushes all objects downwards.
Since it applies to all objects present on earth including human beings, it shall still act on the arm thereby enabling one to extend their arms.
The triceps shall only be needed to controll the extension in terms of distance and speed.
In the absence of functioning triceps brachii, the force of gravity can extend your forearm as the biceps contracts and lifts, decreasing the arm's torque. However, in practice, other muscles may aid in this process.
Explanation:The physics of the human body explain why the force of gravity can extend your forearm even if the triceps brachii is not functioning. The biceps and the triceps in your arm work as opposing forces to either close or open your limb. In this case, when the triceps are not functioning, your forearm can still be extended with the force of gravity acting on your arm. Muscles can only contract, allowing your forearm to rise when your biceps contract and decrease in size. The angle at which the biceps contracts also changes the exerted force. As your forearm lifts, it draws closer to the elbow, reducing the torque on your arm from the weight, and gravity does the rest of the work.
However, it is worth noting that muscles work in pairs - the biceps brachii, brachialis, and brachioradialis all take part in flexing the forearm while the role of extending it is typically performed by the triceps. Thus, in practice, even though gravity can perform this action when the triceps brachii is not functioning, other muscles may aid as well.
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Arrange the processes to show the order in which sedimentary rocks are formed. weathering lithification erosion and transportation sedimentation
Answer:
Weatheringerosion and transportationsedimentationLithificationExplanation:
It begins by rocks being weathered into soil by weathering agents such as water and the sun. The soil is then eroded into rivers by surface runoffs after precipitation. The soil is then transported by the river into water bodies where they fall to the bed as sediments. As the sediments stay long and more sediments settle, applying pressure to the underlying layers, they compact into the sedimentary rock in a process called Lithification.
Answer:
Weathering
erosion and transportation
sedimentation
Lithification
Explanation:
In module 1 you identify which species of lizards were most similar to one another based on
In a well-balanced ecosystem, squirrels eat nuts, raccoons feed on squirrels, and bears feed on raccoons. It was observed that there were more squirrels and fewer raccoons. This situation indicates that . The least amount of energy from the Sun will be received by the .
Answer:
The situation indicates that squirrels are at lower trophic level in comparison to raccoons, and bear will receive the least amount of energy from the Sun.
Explanation:
In the given food chain, the nuts producing plants are producers, and the squirrels are the primary consumer, the raccoons are the secondary consumer and the bears are the top consumers. In a pyramid, the number of organisms is present highest at the base, and its numbers get reduced as one moves towards the top of the pyramid. It can be witnessed from the given food chain that the squirrels hold the lower level in comparison to raccoons, thus the squirrels are more in number. As one moves towards the top, there is a decrease in the captivation of energy obtained from the Sun, thus, bears who are at the top of the food chain will receive the least amount of energy.
Transcription in both eukaryotes and prokaryotes is similar because
Transcription in both eukaryotes and prokaryotes is similar in terms of initiation, elongation, and termination. However, there are differences such as the location of transcription and the types of polymerases used.
Explanation:Transcription in both eukaryotes and prokaryotes is similar because they both involve three main stages: initiation, elongation, and termination. However, there are some key differences. In eukaryotes, transcription occurs in the nucleus and the mRNA transcript needs to be transported to the cytoplasm, whereas in prokaryotes, it occurs in the cytoplasm. Eukaryotes also use three different polymerases to transcribe different subsets of genes, while prokaryotes use a single RNA polymerase.
Fill in the blank with the best possible choice: The GFP gene ___________. Key points are underlined.
hello sir i have no idea what the answer is i just want points
Which type of motion in a lipid bilayer is extremely slow?
The lipids occasionally flip from one face of the membrane bilayer to the other and attach and detach from the surface of the bilayer at very slow but measurable rates. (polar membrane)
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What are the similarities and differences between prokaryotic and eukaryotic genomes?
Similarities: both have cell membranes, DNA, cytoplasm
Differences: only eukaryotic cells have mitochondria/chloroplasts, nuclear membrane, endoplasmic reticulum, DNA in a chromosome
Prokaryotic and eukaryotic genomes both contain DNA but differ in terms of their structure and complexity. Prokaryotic genomes are single, circular, and smaller with no introns and exons, whereas eukaryotic genomes are larger and have multiple linear chromosomes with introns and exons.
Both prokaryotic and eukaryotic genomes consist of DNA, which stores genetic information. However, there are key differences between the two. In prokaryotes, the genome is usually a single circular chromosome and does not reside inside a nucleus, instead, it is contained within the nucleoid region of the cell. In contrast, eukaryotic genomes are found inside a nucleus and have more than one linear chromosome.
Moreover, eukaryotic genomes are generally much larger and contain introns and exons, whereas prokaryotic genomes are smaller and do not have these elements. Furthermore, eukaryotes can have extra-chromosomal DNA in organelles like mitochondria and chloroplasts, while prokaryotes only have extra-chromosomal DNA in plasmids.
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Which item below is NOT an example of how the general rule for dissolving works?
A.
Oil and water do not mix.
B.
Oil and water mix.
C.
Water and methanol mix.
D.
Methanol and oil do not mix.
E.
Oil and grease mix.
Answer:
B.
Oil and water mix
Explanation:
Everyone knows oil and water don't mix
It had to be A or B, because they oppose each other.
Answer: B. Oil and water mix.
Explanation:
The solubility of substances is governed by: Like dissolves like, which states that polar compounds are soluble in polar solvents and non polar compounds are soluble in non polar solvents.
Oils and grease are non polar in nature due to less difference between the electronegativities of carbon and hydrogen and thus are soluble in non polar solvents only.
Water and methanol being polar solvents get dissolved in each other.
Thus oil and water do not mix as water is polar and oil is non polar.
The female reproductive and endocrine systems that work interactively for which main purpose
The female reproductive which is ovary is to produce secondary oocyte. While the endocrine systems will produce hormones such as oestrogen and progesterone
The female ovary's role in reproduction is to create secondary oocytes. Oestrogen and progesterone, among other hormones, are produced by the endocrine systems.
Thus, The female reproductive system's organs create and maintain the female sex cells (also known as ova or egg cells), move them to a location where they can be fertilized by sperm.
It create a favourable environment for the growing fetus, transport it to the outside at the conclusion of its development, and create female sex hormones.
The ovaries, Fallopian tubes, uterus, vagina, accessory glands, and external genital organs are all parts of the female reproductive system.
Thus, The female ovary's role in reproduction is to create secondary oocytes. Oestrogen and progesterone, among other hormones, are produced by the endocrine systems.
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The reactants of enzyme-catalyzed reactions are known as
The correct answer is: substrates
Enzymes are molecule catalysts (usually proteins) with the ability to speed up a chemical reaction by lowering activation energy. Enzymes don’t undergo any permanent chemical change. Reactants of an enzymatic reaction are substrates and they are being changed through the reaction, forming the product of the reaction.
The reactants of enzyme-catalyzed reactions are known as substrates.
Thus, Protein-based molecules called enzymes have the power to lower the activation energy of chemical reactions, hence accelerating them. There is no long-term chemical change in enzymes.
In an enzymatic reaction, reactants serve as substrates and are transformed to create the reaction's final product.
The substrate is the reactant in an enzyme-catalyzed process. When it comes to the substrates they bind to and the processes they catalyze, enzymes are quite particular.
Thus, The reactants of enzyme-catalyzed reactions are known as substrates.
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Which of the following correctly describe a sea urchin?
Select all that apply.
cnidarian
chordate
invertebrate
echinoderm
deuterostome
A sea urchin is correctly described as an invertebrate, echinoderm, and deuterostome. It is not a cnidarian nor a chordate.
Sea urchins are marine animals classified within the Echinodermata phylum, known for their distinctive pentaradial symmetry and spiny body covering. Unlike cnidarians, which include jellyfish and coral, echinoderms have a more complex level of organization and a unique water vascular system. Sea urchins exhibit radial rather than bilateral symmetry that is typical of chordates, and they do not have a notochord, which is a defining feature of the chordates. Furthermore, as deuterostomes, during their embryonic development, the anus develops before the mouth. Therefore, sea urchins, along with starfish and sea cucumbers, are echinoderms. They are also invertebrates because they do not possess a vertebral column or spine, differentiating them from vertebrates which are part of the Chordata phylum. Hence, the terms that accurately describe a sea urchin are invertebrate, echinoderm, and deuterostome.
A student observes a worm-like organism crawling about on dead organic matter. later, the organism sheds its outer covering. one possibility is that the organism is a larval insect (like a maggot). on the other hand, it might be a member of which phylum, and one way to distinguish between the two possibilities is by looking for the presence of
Choose all the answers that apply. The temperate deciduous forest: has four seasons is the driest biomes receives moderate rainfall has the most species diversity has the least species diversity
The correct statements are:
- has four seasons;
- receives moderate rainfall;
The temperate deciduous forests are located in the mid latitudes, almost exclusively on the Northern Hemisphere. They have four seasons, spring, summer, autumn, and winter. The springs and autumns are the periods in which most of the precipitation occurs, and they have mild temperatures. The summer is drier, and relatively warm, while the winters are cold and usually have solid amounts of snow. The species diversity is neither high nor low, but it is moderate.
The temperate deciduous forest has four seasons, receives moderate rainfall, and has a high species diversity, but not the highest. This biome features significant biodiversity influenced by its four distinct seasons and moderate rainfall, but it is neither the driest nor most species-diverse biome.
Explanation:
The temperate deciduous forest biome broadly encompasses characteristics such as having four distinct seasons, receiving moderate rainfall, and hosting a significant amount of species diversity. However, it is not the driest nor the most species-diverse biome. The four seasons include winter, spring, summer, and fall which influences the vegetation and animal life cycles. The moderate rainfall it receives also contributes to its lush vegetation. The biodiversity in this biome is high but rainforests have the highest level of species diversity.
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Read this excerpt from "DNA Testing."
DNA samples from insects preserved in amber can date back to before the time of the dinosaurs, which died out 65 million years ago. George Poinar of Oregon State University, for example, has even extracted muscle tissue from a 125-million-year-old Lebanese weevil. This is, says Poinar, “the best preserved protein on the face of the earth.” So far, DNA has been successfully extracted from about a half dozen ancient samples in amber.
Select the most accurate summary of Kaku’s argument.
Amber has allowed scientists to study DNA that has been preserved over millions of years. Amber’s preservative uses have been studied and explained by scientists at Oregon State University. Amber is an effective preservative for Lebanese weevils, as proven by ancient samples extracted by scientists. Amber can preserve DNA over millions of years; this suggests a new method for preserving culture far into the future.
Amber has allowed scientists to study DNA that has been preserved over millions of years.
The excerpt claims that Amber has allowed scientists to study DNA that has been preserved over millions of years.
What is DNA?DNA refers to the templates of polynucloetides which carries information about the make-up of organisms.
DNA from ancient organisms have been preserved in the form of fossils found on land and in ice.
A form preservative for DNA of living organisms is Amber.
Based on the excerpt, it can be concluded that Amber has allowed scientists to study DNA that has been preserved over millions of years.
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Which of the following statements is FALSE regarding water intake and output by the body?An increase in the amount of beverages taken by mouth would increase the urine output.An increase in fluid taken by mouth would reduce the amount produced by metabolism.An irritation to the colon that leads to diarrhea would increase the proportion of water lost through feces.The proportion of fluid lost by the body as sweat would increase during exercise.
B. An increase in fluid taken by mouth would reduce the amount produced by metabolism
The false statement is that an increase in fluid intake would reduce the amount of water produced by metabolism. Metabolic water production is constant and not influenced by fluid intake. The body maintains water balance through various other mechanisms such as increased urine output, sweat, and water loss through feces.
Explanation:The statement that is FALSE regarding water intake and output by the body is: 'An increase in fluid taken by mouth would reduce the amount produced by metabolism.' The amount of water produced by metabolism is not affected by the amount of fluid intake. Water is generated during the final stages of aerobic respiration in cellular metabolism, which is not influenced by fluid intake. Most water intake comes from liquids and food via the digestive tract, but the water generated by cellular metabolism contributes to about 10% of the body's water availability.
Drinking more beverages would indeed often increase urine output as the kidneys work to expel excess water from the body. Irritation to the colon increasing water loss through feces, and an increase in sweat during exercise, are also both true, as these are both methods the body uses to expel extra water and maintain homeostasis. Therefore, these statements are typically correct.
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What is the process by which the concentration of a substance increases in the tissues of organisms as it travels up the food web called?
➷ It is known as biomagnification or bioamplification.
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Match the following cell structures with their functions.
Plasma membrane
Cytoplasm
Nucleus
Mitochondria
Chloroplast
Cell wall
Vacuoles
Hi, hope this helps :D
Plasma Membrane: protects the cell from its surroundings
Cytoplasm: A clear jelly-like substance that lets everything else in the cell move around
Nucleus: Controls everything in the cell
Mitochondria: Produces energy
Chloroplasts: They have chlorophyll in them, and they’re responsible for photosynthesis
Cell wall: The protective outer layer
Vacuoles: Stores a bunch of nutrients
plasma membrane: protects the cell from inferiors and regulates a passage through the cytoplasm
cytoplasm: material within the living cell, not including the nucleus and it is a clear like substance
nucleus: in control of the cell and forms a basis for its activity and growth throughout the cell
mitochondria: produces energy and a biochemical process of the entire cell
chloroplast: responisble for the photosynthesis and contains chlorophyll
cell wall: a rigid layer on the outside of the entire cell, protecting it from inferiors and consists of mainly cellulose
vacuoles: a space of vesule for holding water and liquid within the plant and stores most of the nutrients within itself
hope this helps!!
If p = 0.65, what is q?
a, .65
b, .35
c, .55
the best answer u got here is B.35
hope this helps and mark brainliest
The value of 'q' cannot be determined from the information provided - 'p' and 'q' could represent any number, and without an equation relating them we cannot specify the value of 'q'.
Explanation:The question doesn't provide enough information to determine the value of 'q'. In algebra, variables such as 'p' and 'q' can represent any number, so without more context or a equation relating 'p' and 'q', we can't definitively say what 'q' equals. According to the options given, 'q' could be any of .65, .35, .55, or any other number.
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What is the earliest point after conception that a home pregnancy test can be used to confirm pregnancy?
Answer:
2 weeks
Explanation:
After having sexual intercourse you take the test 2 weeks after if you take it earlier than that then your answer will be positive cause the sperm is still moving
Which of the following statements correctly describes how Mendel accounted for the observation that traits had disappeared in the F1 generation and then reappeared in the F2 generation?
A) Traits can be dominant or recessive, and the recessive traits were "hidden" by the dominant ones in the F1.
B) New mutations were frequently generated in the F2 progeny, causing traits that had been lost in the F1 to reappear in the F2.
C) Members of the F1 generation had only one allele for each trait, but members of the F2 had two alleles for each trait.
D) The mechanism controlling the appearance of traits was different between the F1 and the F2 plants.
Answer:
A) Traits can be dominant or recessive, and the recessive traits were "hidden" by the dominant ones in the F1.
Explanation:
Mendel discovered the fundamental theory of heredity: that inheritance involves the passing of genes (he called it discrete units of inheritance), from parents to offspring. Those genes are with two alleles in the genotype, one inherited from the father and other inherited from the mother.
When he cross-bred pure-bred parent (always produced offspring identical to the parent) plants dominant traits were always seen in the offspring, while recessive traits were hidden until the first-generation (F1) hybrid plants were left to self-pollinate. Mendel also noticed that in second-generation (F2) of the offspring 3:1 was ratio of dominant to recessive traits.
Mendel described traits that disappeared in the F1 generation and reappeared in the F2 generation as dominant or recessive. The recessive traits were hidden by the dominant ones in the F1, but could reappear in the F2 when the hybrid F1 plants were crossed.
Explanation:The correct statement that describes how Mendel accounted for the observation that traits had disappeared in the F1 generation and then reappeared in the F2 generation is: "Traits can be dominant or recessive, and the recessive traits were 'hidden' by the dominant ones in the F1." This is because Mendel observed that when plants with different traits were crossed, the dominant trait appeared in all the F1 hybrid offspring, while the recessive trait appeared to disappear. However, the recessive trait reappeared in the F2 generation when the F1 plants were self-crossed or intercrossed. Mendel proposed that traits were determined by heritable "factors," now known as genes, which came in pairs. If an organism had at least one dominant factor, the dominant trait would be expressed. The observation of a recessive trait in the F2 generation indicated that the organism lacked any dominant factors for that characteristic.
Question text The skeleton of an echinoderm is composed of individual plates called
interlocking calcium carbonate plates is the answer.
TRUE OR FALSE
Oxygen is absorbed into the bloodstream in the trachea?
False. Oxygen is absorbed in the alveoli sacs of the lungs.
Upon inhalation Air must first pass through the larynx and down to the trachea, which then splits off into two separate bronchial tubes, the bronchial tubes divide into smaller air passages known as the bronchi and those into even smaller bronchioles. The bronchioles end in tiny sacs called the alveoli which transfer the oxygen from the inhaled air to the bloodstream.
It is true.
The respiratory system consists of all the organs involved in breathing. These include the nose, pharynx, larynx, trachea, bronchi and lungs. The respiratory system does two very important things: it brings oxygen into our bodies, which we need for our cells to live and function properly; and it helps us get rid of carbon dioxide, which is a waste product of cellular function. .
Which English law allows people to cross private lands in order to follow rights of way
Answer:
Public trust doctrine
Explanation:
The Public Trust Doctrine is English law that allows people to cross private land to follow rights of way.
This doctrine allows people to use some privately owned resources when rights of way need to be secured. This doctrine can be used, for example, on the shoreline between the high and low tides, when citizens need to cross these places, or when public use of private land in that region is required.
The English law that involves crossing private lands on established paths is linked to public rights of way and the legal concept of easements, with modern statutes like the Countryside and Rights of Way Act 2000 establishing legal frameworks for such use.
The English law that allows people to cross private lands in order to follow rights of way typically refers to the legal concept of public rights of way and easements. An easement is a legal right to use another's land for a specific limited purpose. In England, public rights of way are paths which the public are able to lawfully use even if they pass over private land. These rights of way exist under both common law and the modern legal framework established by statutes such as the Countryside and Rights of Way Act 2000, commonly known as the 'CROW Act' or the 'Right to Roam'.
The principle behind such rights often involves the balance between private land ownership and the public's interest in accessing lands for travel and recreation. This is supported by eminent domain, allowing the state to appropriate private land for public use, with fair compensation, subject to legal proceedings.
Which of the following statements about RNA splicing is false?A: Conventional introns are not found in bacterial genesB: For a gene to function properly, every exon must be removed from the primary transcript in the same fashion on every mRNA molecule produced from the same geneC: Small RNA molecules in the nucleus perform the splicing reactions D: Splicing usually occurs after the 5′ cap has been added to the 5' end of the primary transcript.
The false statement is: B: For a gene to function properly, every exon must be removed from the primary transcript in the same fashion on every mRNA molecule produced from the same gene
RNA splicing represents the process of RNA processing in which newly synthesized pre-mRNA transcript is converted into a mature mRNA. This process occurs only in eukaryotic organism and includes the removal of introns and joining together the exons. RNA splicing might occur during or immediately after transcription and it is performed by spliceosome (complex of small nuclear ribonucleo proteins).
The false statement about RNA splicing is that every exon must be removed from the primary transcript in the same fashion for every mRNA molecule from the same gene. Instead, it's the introns that are removed and different combinations of exons can be joined to increase protein diversity.
Explanation:The statement about RNA splicing that is false is B: 'For a gene to function properly, every exon must be removed from the primary transcript in the same fashion on every mRNA molecule produced from the same gene.' This statement is incorrect because instead of exons, it's the introns that are removed during RNA splicing. Exons are expressed sequences that remain in the mature mRNA and code for proteins. In contrast, introns are intervening sequences that get removed to generate the mature mRNA which goes on for translation to form proteins. The process of removal of introns and joining the exons is referred to as RNA splicing.
Moreover, it's not a rigid rule that every RNA molecule from the same gene would undergo splicing in exactly the same way. There is a phenomenon called alternative splicing where different combinations of exons can be joined during splicing leading to different versions of mRNA from the same gene. This is one way of increasing the diversity of proteins that a single gene can produce.
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