a nucleotide is composed of a nucleotide is composed of a nitrogenous base, a phosphate group, and a pentose sugar. a nitrogenous base, a phosphate group, a pentose sugar, and an amino acid. a nitrogenous base and a phosphate group. a nitrogenous base and a pentose sugar
Answers
A nucleotide is composed of a nitrogenous base, a phosphate group, and a pentose sugar, and does not contain an amino acid. Here option A is the correct answer.
A nucleotide is the basic building block of nucleic acids, such as DNA and RNA. It is composed of three main components: a nitrogenous base, a phosphate group, and a pentose sugar.
The nitrogenous base can be one of four types: adenine (A), cytosine (C), guanine (G), or thymine (T) in DNA and adenine (A), cytosine (C), guanine (G), or uracil (U) in RNA. The pentose sugar is usually ribose in RNA and deoxyribose in DNA. The phosphate group is attached to the sugar molecule.
A nucleotide does not contain an amino acid. Amino acids are the building blocks of proteins, not nucleic acids. Proteins and nucleic acids are different types of biomolecules with distinct structures and functions.
Complete question:
a nucleotide is composed of a nucleotide is composed of
A - a nitrogenous base, a phosphate group, and a pentose sugar.
B - a nitrogenous base, a phosphate group, a pentose sugar, and an amino acid.
C - a nitrogenous base and a phosphate group.
D - a nitrogenous base and a pentose sugar
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Related Questions
Question 4. What doe starch and sucrose have to be broken down into for cells to use as energy?
Answers
Answer:
In turn, animals eat these sugars and starches, break them back down into glucose, and use the energy within the bonds of glucose to power our cells.
Explanation:
which part of the brain influences the autonomic and hormonal responses via connections with the hypothalamus?
Answers
Paraventricular nucleus influences the autonomic and hormonal responses via connections with the hypothalamus.
Paraventricular nucleus is the nucleus present in the hypothalamus. It is considered as one of the three zones of the hypothalamus. It is also responsible for the secretion of the hormone called oxytocin apart from regulating autonomic responses. The nucleus is actually a collection of several nuclei joined together with one motor output system.
Autonomic responses are the functions that are carried out on their own without our consciousness. These responses are digestion, pumping of heart, breathing, etc. The appearance of goosebumps is also an autonomic response.
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Which lobe of the liver most often gets abscesses due to Entamoeba infection?
Answers
The right lobe of the liver is most often affected by abscesses due to Entamoeba infection.
Entamoeba histolytica is a parasitic amoeba that can infect and spread to other tissues, including the liver. A liver abscess, which is a pus-filled hollow within the liver tissue, can be caused by the parasite.
The right lobe of the liver is more usually affected by these abscesses because it has a higher blood supply than the left lobe, making it more prone to infection.
Fever, stomach pain, nausea, vomiting, and jaundice are some of the symptoms of a liver abscess caused by Entamoeba infection. Antibiotics and abscess drainage are usually used to treat abscesses.
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An survey makes use of evidence, such as the footprints left behind by animal, to follow animals that re difficult to track.
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The correct word to fill the gap would be indirect.
In other words, an indirect survey makes use of evidence, such as the footprints left behind by animals, to follow animals that are difficult to track.
Ecological surveys are of 2 types:
DirectIndirectDirect ecological surveys have to do with studying phenomena directly and recording whatever that is observed.
Indirect surveys involve an indirect way of studying phenomena. The signs left by phenomena are observed and logically used to make deductions about such phenomena.
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A chicken 3 to 5 months of age, weighing no more than 5 pounds, with a partially for fully hardened breastbone is a _____
a. Broiler
b. Fryer
c. Capon
d. Roaster
Answers
The correct term for a chicken 3 to 5 months of age, weighing no more than 5 pounds, with a partially or fully hardened breastbone is a "Fryer."
Option (b) is correct.
The terms "broiler," "fryer," "capon," and "roaster" are commonly used to categorize chickens based on their age, size, and intended use in the poultry industry.
A broiler refers to a chicken that is specifically bred and raised for meat production. Broilers are usually slaughtered at a young age, typically between 6 to 7 weeks, and have a tender meat texture.
A fryer, on the other hand, refers to a slightly older chicken that is still relatively young and tender. It is typically between 3 to 5 months of age and weighs no more than 5 pounds. The breastbone of a fryer may be partially or fully hardened, indicating a slightly more mature bird compared to a broiler.
A capon is a male chicken that has been castrated at a young age to enhance its meat quality and tenderness. Capons are usually larger and heavier than broilers and fryers, weighing around 6 to 10 pounds.
Based on the given description of a chicken that is 3 to 5 months old, weighing no more than 5 pounds, and has a partially or fully hardened breastbone, the most appropriate term is a "fryer."
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HELP ASAP PLS!!! Which of the following statements is correct about nonsexual touch as it relates to older adults?
O The main benefit of nonsexual touch is meeting the need for intimacy.
The main benefit of nonsexual touch is alleviating gastroesophageal reflux.
The main benefit of nonsexual touch is exercising joints and muscles.
The main benefit of nonsexual touch is to the circulatory system.
Answers
The main benefit of nonsexual touch is meeting the need for intimacy.
What is non sexual touch?Non-sexual touch is therapeutic, relaxing, and crucial for connection, whether it is sexual or not. Non-sexual touch may be discouraged in contemporary American culture.
Non-sexual, acceptable touch can help people become less emotionally reactive while fostering warmth and connection in relationships.
Non-sexual touch offers happiness, tranquillity, and physical health. which is a fairytale conclusion. In our highly independent world, non-sexual touch is a requirement that is frequently disregarded.
Therefore, The main benefit of nonsexual touch is meeting the need for intimacy.
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what would happen if DNA replication it didn't occur?
Answers
Answer:
If DNA replication does not occur, then the cell cycle (Mitosis and Miosis) will not proceed to the next stage and the subsequent division will not happen. It will lead to cell death.
Simply put, without cell replication, cells can’t divide and they eventually die out.
What structures are missing from the root hair cells?
Answers
that’s gotta be the answer i would put money on that shi
1. Identify the basic characteristics of a house cat and explain why it belongs in the domain Eukarya and the kingdom Animalia?
Answers
Answer:
House cats have a nucleus in their cells which is why its in the domain Eukarya. It belongs in the Kingdom Animalia because it's an animal, classed in it.
Explanation:
What is an example of when lactic acid fermentation would occur?
Answers
Answer:
Lactic acid fermentation can be used to make foods such as yogurt, pickles, sauerkraut, etc. Lactic acid fermentation also takes place in human muscle cells during intense exercise.
Explanation:
Answer:
Lactic acid fermentation is used to make many foods such as yogurt and pickles. It also take place in muscle cells during exercise.
Which descriptions can be used for sand on a beach?
Answers
Answer:
abiotic factor, nonliving thing
Crumby, soft, clear, wet, moist
Explanation:
Animals that are classified as vertebrates and have rudimentary vertebrae are the ______ and the ______.
Answers
Animals that are classified as vertebrates and have rudimentary vertebrae are the Hagfish and the lamprey.
Agnathans, or fish with no jaws, include lampreys and hagfish, which are closely related to gnathostomes, or vertebrates with jaws.They are thought to be the earliest vertebrates.The only remaining jawless fish and its representative are these two fish.
Often referred to as "slime eels," the marine fish of the Myxini genus Hagfish produce slime. Despite the fact that hagfish do possess rudimentary vertebrae, they are the only known living animal with a skull but no vertebral column.Hagfish, like lampreys, lack jaws;The two belong to the jawed vertebrates sister group, and living hagfish are similar to hagfish from approximately 300 million years ago.
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When a chemical change occurs, the identity of matter does not change.
True or False?
Answers
Answer:
true because matter can't dissapear or be created
Answer:
False
Explanation: Chemical changes are changes that occur when one substance is turned into another substance. The particles of one substance are rearranged to form a new substance.
ifi DNA Unit Test BIOLOGY IA / DNA Epistasis is observed when the allele of one gene masks the effects of another gene. Use the Punnett square to answer the question. AB Ab ab Vocabulary.com aB ab AB AABB AABb AaBB AaBb black black black black Ab AABb AAbb AaBb Aabb black brown black brown aB AaBB AaBb aaBB aaBb black black yellow yellow Spolity Web Player O Shapchat AaBb Aabb aaBb aabb black brown yellow ? What color would a dog's fur be if its genes are aabb? 31 Il O a
Answers
Recessive epistasis occurs when the recessive allele of one gene is epistatic over the other gene. The resulting phenotypic ratio is 9:3:4. In the exposed example, the phenotype of the aabb dog is yellow. Option A.
What is epistasis?Epistasis means interruption and refers to interactions between genes located in different loci in the same chromosome.
An epistatic gene can alter, influence, or suppress the expression of a hypostatic gene.
Epistasis might be either dominant or recessive,
When the epistatic gene is dominant, the interaction is known as dominant epistasis.The phenotypic ratio resulting from dominant epistasis is 12:3:1.
When the epistatic gene is recessive, the interaction is known as recessive epistasis.The phenotypic ratio is 9:3:4.
The exposed situation is an example of recessive epistasis, in which two diallelic genes affect the dog's fur color,
B is a dominant allele that codes for black color.b is a recessive allele that codes for brown color.A is the dominant allele that allows the expression of pigment.a is the recessive allele that that inhibits pigment expression. In this case, fur is yellow.The presence of at least one A allele is enough to express black (BB or Bb) or brown (bb) color. The absence of the A allele inhibits pigment expression.
The possible genotypes and phenotypes are,
AABB, AaBB, AaBb, AABb ⇒ Black AAbb, Aabb ⇒ BrownaaBB, aaBb, aabb ⇒ YellowAs we can see in the Punnett square, the phenotypic ratios are 9:3:4
9/16 black dogs3/16 brown dogs4/16 yellow dogs.So the genotype aabb expresses yellow color. The genotype aa inhibits color expression, so the dog's fur is yellow. Option A is correct.
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Complete question:
Epistasis is observed when the allele of one gene masks the effects of another gene.
Use the Punnett square to answer the question.
What color would a dog's fur be if its genes are aabb?
A. yellow
B. brown
C. black
D. white
Punnett square
AB Ab aB ab
AB AABB (black) AABb (black) AaBB (black) AaBb (black)
Ab AABb (black) AAbb (brown) AaBb (black) Aabb (brown)
aB AaBB (black) AaBb (black) aaBB (yellow) aaBb (yellow)
ab AaBb (black) Aabb (brown) aaBb (yellow) aabb (???)
please help i dont understand this
Answers
Answer:
The problem is asking what gas the water plant is releasing, which in this case would be
D. Oxygen
The cheetah is reputed to be the fastest land mammal. The evolutionary process that gave rise to this speed is most likely to be what kind of selection?
Answers
The cheetah is reputed to be the fastest land mammal. The evolutionary process that gave rise to this speed is most likely to be directional selection.
The survival of the fittest is characterised as natural selection. Directional selection is a sort of natural selection in which one of the trait's extreme versions is chosen. In a giraffe population, for example, each individual giraffe has a slightly varying neck length. This variety in the feature provides each giraffe with a unique edge when it comes to obtaining food from tree branches.
When both extreme qualities in a population are chosen, this is known as disruptive selection. Disruptive selection produces the most variance within a population and is thus the most likely to result in speciation. A colony of peppered moths in London is one example of disruptive selection.
Natural selection that stabilises the population mean on a certain non-extreme trait value is known as stabilising selection. Because most traits do not appear to change significantly over time, this is thought to be the most common mode of action for natural selection.
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Some bacteria can't survive
in the presence of oxygen.
Which of the following
environments could they
NOT survive in?
A. anaerobic chamber
B. intestines of organisms
C. deep soil
D. on the skin of animals
Answers
Bacteria that can't survive in the presence of oxygen are called obligate anaerobes. These organisms lack the enzymes needed to neutralize the toxic byproducts of oxygen metabolism.
As a result, they cannot survive in environments where oxygen is present. An anaerobic chamber is a controlled environment that is completely devoid of oxygen, making it an ideal environment for these bacteria to grow. Deep soil can also be a suitable habitat for anaerobic bacteria, as it provides them with the necessary nutrients and protection from oxygen.
The skin of animals can be colonized by a variety of microorganisms, including anaerobic bacteria. However, the intestines of organisms are not an ideal environment for obligate anaerobes, as the digestive tract is rich in oxygen. Therefore, the correct answer is B - intestines of organisms.
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Dr. Wicked administers a toxin that causes a synthesized protein to be improperly packaged and incorrectly delivered to the wrong destination by this cell.
Which labeled structure is the most likely target of the toxin causing this issue in the cell?
Choose 1 answer:
(Choice A)
Structure A
(Choice B)
Structure B
(Choice C)
Structure C
(Choice D)
None of these labeled structures would be a target of this toxin.
Answers
Answer:
It's Choice C.) Structure C
Explanation:
Trust me
The best target of toxin to cause improper packaging and targeting is Golgi body.
Packaging and Targeting of protein:
Protein is transported to Endoplasmic reticulum. ER vesicles fuse with Golgi body. In Golgy body protein's post transnational modification occur.Therefore the best target of toxin to cause improper packaging and targeting is Golgi body.
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earl sutherland received the nobel prize for his discovery of camp as a second messenger. which observation suggested to sutherland the involvement of a second messenger in epinephrine's effect of liver cells?
Answers
Earl Sutherland received the Nobel Prize for his discovery of cAMP (cyclic Adenosine Monophosphate) as a second messenger. The observation that suggested to Sutherland the involvement of a second messenger in epinephrine's effect on liver cells was the separation of the liver cell membrane from the cytoplasm.
Here's a step-by-step explanation:
1. Sutherland observed that when epinephrine was added to liver cells, it triggered the conversion of glycogen to glucose, a process called glycogenolysis.
2. To understand how epinephrine triggered this response, Sutherland and his team separated the liver cell membrane from the cytoplasm.
3. They found that epinephrine could still stimulate the cell membrane to produce an unidentified substance.
4. When this substance was added to the cytoplasm, it stimulated glycogenolysis even in the absence of epinephrine.
5. Sutherland identified the substance as cyclic AMP (cAMP) and proposed that it acted as a second messenger, relaying the signal from epinephrine on the cell membrane to the enzymes inside the cell responsible for glycogenolysis.
This discovery was crucial for understanding the role of second messengers in cellular signaling and communication, ultimately leading to Sutherland's Nobel Prize in 1971.
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what are All living things are made of at least one cell.
Answers
Answer:
an organism
Explanation:
List and explain the steps in the process of scientific inquiry.
Answers
The scientific method has five basic steps, plus one feedback step:
1. Make an observation.
2. Ask a question.
3. Form a hypothesis, or testable explanation.
4. Make a prediction based on the hypothesis.
5. Test the prediction.
6. Iterate: use the results to make new hypotheses or predictions.
4. what are the major steps that occur during cellular respiration? what happens in each step (summarize briefly the key point(s))?
Answers
Cellular respiration is the process of breaking down food molecules to obtain energy. Three major steps that occur during cellular respiration are Glycolysis, the Krebs cycle, and the Electron transport chain.
The following are the three major steps that occur during cellular respiration:
1. Glycolysis
The first stage of cellular respiration is glycolysis. In glycolysis, glucose is broken down into pyruvate in the cytoplasm of the cell. This process releases a small amount of energy, which is stored in the form of ATP (adenosine triphosphate).
2. Krebs cycle
After glycolysis, the pyruvate molecules are transported to the mitochondria for the Krebs cycle. In the Krebs cycle, the pyruvate molecules are broken down into carbon dioxide, releasing more energy, which is stored in ATP.
3. Electron transport chain
The final stage of cellular respiration is the electron transport chain. In this stage, energy is transferred from the NADH and FADH₂ molecules produced in glycolysis and the Krebs cycle to create a proton gradient across the mitochondrial membrane. This gradient drives the synthesis of ATP through a process called chemiosmosis.
Overall, the process of cellular respiration involves breaking down food molecules to obtain energy in the form of ATP. Glycolysis, the Krebs cycle, and the electron transport chain are the three major steps involved in this process.
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Only 1 out of 100 ea turtle urvive it to adulthood. From the moment they hatch, ea turtle mut trive for urvival. They race acro the beach and battle the wave moment after their birth. Throughout thi time, predator are talking them for an eay meal. Some ea turtle are fater than other
Answers
The survival rate of sea turtles is alarmingly low, with only 1 out of 100 hatchlings making it to adulthood.
The moment they hatch, they face a difficult journey towards survival. The hatchlings race across the beach and struggle against the waves, while being constantly threatened by predators seeking an easy meal. Their journey is full of challenges, with faster hatchlings having a better chance of making it to safety. However, despite the odds, some sea turtles do manage to overcome these obstacles and grow into mature adults. Conservation efforts are critical to ensure the survival of these magnificent creatures and help maintain the delicate balance of ocean ecosystems.
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what is GLUCOSE used for FULL EXPLANATION
Answers
Answer:
Glucose is sugar in simple words. In other words, glucose is simple sugar that is important energy source for living organisms and is a component of a lot of carbohydrates.
Explanation:
pls help and only answer if you can please
Answers
Answer:
A
Explanation:
I got this by process of elimination because I know all those other answers are wrong
I think the answer is A.
what differences can you see between the fibers at this microscale? list at least two differences
Answers
When it comes to the differences between fibers at the microscale, there are several differences that can be observed.
When it comes to the differences between fibers at the microscale, there are several differences that can be observed. Here are two of the most prominent ones:Color - Fibers at the microscale differ in color. In particular, different types of fibers tend to have different hues, which makes it easy to differentiate between them. Some fibers, for instance, are white, while others are off-white, gray, or brown. Microscope - The type of microscope used to view fibers at the microscale can also make a significant difference. Different microscopes have different lenses, which can affect the way that the fibers appear. For example, some microscopes have polarizing filters that can be used to view fibers in different colors or patterns. Others have higher magnification levels, which can reveal more details about the fiber's structure. Finally, some microscopes have a built-in light source that can be used to illuminate fibers from different angles, which can also affect their appearance.
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On a hot summer day, Tameka spilled water on the sidewalk, but a few hours later there was no evidence of the water. What most likely happened to the water?
A) boiling and evaporation
B) sublimation and vaporization
C) boiling and sublimation
D) vaporization and evaporation
Answers
Answer:
d
Explanation:
because the sun dried up the water which is making it get so hot it just evaporates into a gas
D
Vaporization is the transitional phase of an element as it changes from a liquid phase into a gas phase at a point greater than the boiling point. Evaporation is the transition from the liquid phase to the gas phase that takes place below the boiling temperature.
Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. The surrounding gas must not be saturated with the evaporating substance. When the molecules of the liquid collide, they transfer energy to each other based on how they collide with each other.
They BOTH turn into GAS
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Which of the following best describes how an evolutionary biologist would use comparative anatomy to examine paleontological evidence and determine the evolutionary relationship between two species?
By analyzing the genomes of each species to look for similar gene sequences
By determining if each species uses different structures to carry out the same functions
By examining the bone structures of each species to look for similar structural patterns
By studying the metabolic pathways of each species to look for similarities in cellular respiration
Answers
Answer:
C
Explanation:
I am taking the test right now and it seems to be the most valid answer
The best description of the use of comparative anatomy to examine paleontological evidence is;
By examining the bone structures of each species to look for similar structural patternsPaleontology and Carbon datingPaleontology is the study of ancient life. This ranges from dinosaurs to prehistoric plants, mammals, fish, insects, fungi, and to some extent, microbes.
Fossil evidence reveals how organisms changed over time and what life on our planet was like long ago.
The advent of carbon-dating technology has helped evolutionary biologists in their quest for knowledge about what life was like on our planet years ago.
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What would happen to this food web if more mice were introduced into the ecosystem? Keeping in mind the fact that there are already mice and more are being added! PLZ ANSWER. Thank u!
Answers
How many young worms are produced per year?
Answers
Answer:
3-1000 per year
Explanation:
An earth worm would typically be 20 to 30 cocoons per year.
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