Both strands of the DNA double helix contain nitrogenous bases held together by hydrogen bonds. In DNA, the sequence of nitrogenous bases varies widely. What is the significance of the nitrogenous bases?

A. They determine the amino acids in the proteins synthesized.
B. They prevent mutations from occurring in the process of DNA replication
C. They help complete the sugar-phosphate backbone of DNA molecules.
D. The amount of adenine and cytosine determines the length of the gene on a DNA molecule.

Answers

Answer 1

Answer:

A

Explanation:

Essentially, in the process of protein synthesis, there is first transcription where mRNA is synthesized off of a DNA strand with complementary nitrogenous bases. After processing occurs (in basic terms the mRNA is literally processed) and the mRNA strand leaves the nucleus, it attaches to a large and small ribosomal subunit (a ribosome) where translation occurs. The gist of it is when the mRNA strand is being read by the ribosome. tRNA will come over and bind temporarily bringing with it a specific amino acid, starting the formation of the polypeptide/amino acid chain. Nitrogenous bases play into this as the sequence of the nitrogenous bases is what determines what tRNA will bind onto it which determines which amino acid is brought. More specifically, this deals with the codons of the mRNA and the corresponding anticodons with the tRNA, which is a bit of a more specific topic.

Answer 2

The nitrogenous bases help complete the sugar-phosphate backbone of DNA molecules. The correct option is C.

What is DNA?

DNA, also renowned as deoxyribonucleic acid, is a complex molecule that includes all of the information required to construct and retain a lifeform.

DNA is found in the cells of all living things. In real sense, as in almost every cell in a multicellular organism contains the entirety of the organism's DNA.

DNA is composed of chemical key components known as nucleotides. These building blocks are composed of three components: a phosphate group, a sugar group, and one of four different types of nitrogen bases.

Nucleotides are linked together in chains, with the phosphate and sugar groups alternating.

Thus, the correct option is C.

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Related Questions

Define essential nutrient.

Answers

Answer:

Here:

Explanation:

They are nutrients that are not produced inside your body but your body needs it to survive. One example is Omega-3 fatty acid which is an essential fatty acid.

Answer:

Substance that must be obtained from the diet because the body cannot make it in sufficient quantity to meet its needs.

Explanation:

Hope this answers your question :)

what level of protein structure is found in most enzymes and hemogoblin​

Answers

Interactions among the amino acid side chains within a single protein molecule determine the protein's tertiary structure. Tertiary structure is the most important of the structural levels in determining, for example, the enzymatic activity of a protein.

Tertiary level of protein structure is found in most enzymes and hemoglobin.

What are the functions of proteins?

Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs.

Protein has many roles in your body. It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance.

There are seven types of proteins: antibodies, contractile proteins, enzymes, hormonal proteins, structural proteins, storage proteins, and transport proteins.

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what role does energy play in changing particle motion?​

Answers

Answer:

A rise in temperature increases the kinetic energy and speed of particles; it does not weaken the forces between them. The particles in solids vibrate about fixed positions; even at very low temperatures. Individual particles in liquids and gases have no fixed positions and move chaotically.

Explanation:

why the numerical values on the X and Y axis has to be consistent?

Answers

Answer:

Each axis needs a scale to show the range of the data on that axis. The low end of the scale may be zero or a round number value slightly smaller than the smallest data point. The high end of the scale is usually a round number value slightly larger than the largest data point. The scale is measured off in major and minor tick marks. Typically the scale runs from low to high in easily counted multiples like 10s, 50s, 100s, etc. When graphs are compared side-by-side, consider scaling them to the same data range to make comparisons easier.

Explanation:

thx

Plzz help!
Which best describes the relationship between two species and a niche?
If two species have the same niche, one species will always become extinct.
Two species are able to occupy the same niche in the same habitat.
Two species cannot occupy the same niche in the same habitat.
If two species have the same niche, one species will always move.

Answers

Answer:

C. Two species cannot occupy the same niche in the same habitat.

Explanation:

just took the quiz

Answer:

C

Explanation:

I did it on edge 2020

what is Janus green b​

Answers

Answer:

Janus Green B is a basic dye and vital stain used in histology.

Explanation:

Phosphatidate (phosphatidic acid) is a precursor in the synthesis of some lipids. Phosphatidate (phosphatidic acid) is a branched molecule. The core of the molecule is a three carbon chain. Carbon one is single bonded to two hydrogens, and a side chain. The side chain is oxygen single bonded to carbon. The carbon is double bonded to oxygen and an R 1 side chain. Carbon two of the core chain is single bonded 1 hydrogen and to oxygen which is single bonded to carbon. The carbon is double bonded to oxygen and single bonded to an R 2 side chain. Carbon three is single bonded to two hydrogens and a phosphate group. P O 4 2 minus. Phosphatidate (phosphatidic acid) Identify the lipids that have phosphatidate as a precursor.

Answers

Answer:

glycerolphospholipids, triacylglycerol, and cardoilpin.

Explanation:

PS: Kindly check the attached picture for the structure of Phosphatidate (phosphatidic acid).

The chemical compound known as Phosphatidate or the phosphatidic acid belongs to a group known as phospholipids. Phosphatidate or the phosphatidic acid can be prepared by using the chemical compound known as diacylglycerol kinase to phosphorylate diacylglycerol. Also, Phosphatidate (phosphatidic acid) can be prepared by making use of lysoPA-acyltransferase to acrylate lysophosphatidic acid[a phoshopipid derivative].

The lipids that have Phosphatidate (phosphatidic acid) as precursor are glycerolphospholipids, triacylglycerol, cardoilpin, phosphatidylinositol


The thin rigid "skin" that floats atop the layer below is the crust.
True
False

Answers

I think it is false.

In your own words what are the definitions of:

Geological Oceanography

Physical Oceanography

Chemical Oceanography

Biological Oceanography

Answers

Answer: Oceanography is the study of all aspects of the ocean. Oceanography covers a wide range of topics, from marine life and ecosystems to currents and waves, the movement of sediments, and seafloor geology Geological oceanography is the study of Earth beneath the oceans.

Physical oceanography is the study of physical conditions and physical processes within the ocean, especially the motions and physical properties of ocean waters. Physical oceanography is one of several sub-domains into which oceanography is divided. Others include biological, chemical and geological oceanography.

Chemical oceanography is a broad and complex study of the metamorphosis that the chemicals within oceans, living marine organisms, and the ocean floor undergo. The ocean contains a multitude of chemicals; some are natural, and others are man-made. These chemicals enter the sea in a number of ways.

Biological oceanography is a field of study that seeks to understand what controls the distribution and abundance of different types of marine life, and how living organisms influence and interact with processes in the oceans.  

P.s Hope it helped ^^

Which is an abiotic factor that most limits the number of frogs living in a pond?

Answers

Answer:the temperature of the water

Explanation:

Can someone please answer these 3 for me

Answers

Answer:

It is positive feedback

CAN SOMEONE HELP ME WITH THE PICTURE ABOVE
thank you

Answers

Answer:

B.

Explanation:

2% better off

When you feel cold, there are sensors in your skin that tell the brain you need to warm up. The brain sends messages, by way of nerves, to the muscles in your body causing them to contract and relax very quickly resulting in a shiver. The movement of the muscles during a shiver generates heat which can be used to warm up the surrounding tissues. Which characteristic(s) of life is being represented during this action?
A) respond to stimuli
B) maintain homeostasis
C) growth and adaptation
D) respond to stimuli and maintain homeostasis

Answers

I think it is D because your responding to the cold from stimuli and by creating heat to keep your body the average temperature it is homeostasis.

Explain, in paragraph form, how each factor impacts on your career choice

Answers

Answer:

Factors such as the influence of the family, that of peers and of the school itself, the information available through school visits to places of work, and work experience of students, the availability of occupational information and of the demands for jobs; the difference in age, gender, and personal characteristics ...

Explanation:

True or false?
Density is equal to the mass of an object divided by its volume.

Answers

Answer:

True

Explanation:

The formula for density is

p = m/v

density = mass ÷ volume

When does the Northern Hemisphere receive the fewest direct rays from the Sun?
during the fall equinox
during the winter solstice
O during the spring equinox
during the summer solstice
0

Answers

Answer:

during the winter solstice is the correct answer

Explanation:

I took the test

During the winter solstice, the Northern Hemisphere receive the fewest direct rays from the Sun.

When does the Northern Hemisphere receive the fewest direct rays from the Sun?

During the winter solstice, the sun's rays strike the Northern Hemisphere at the smallest angle which results in the fewest number of daylight hours  in Northern Hemisphere.

So we can conclude that during the winter solstice, the Northern Hemisphere receive the fewest direct rays from the Sun.

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What do some scientists today believe causes more adaptations' competition or environmental changes?

Answers

Answer:

According to an April study, table corals (Acropora hyacinthus) can adapt to resist bleaching in warmer waters. On Ofu Island in American Samoa, A. hyacinthus lives in both hot and cool pools. In the lab, researchers tested corals from both environments to see how they reacted to increased heat.

Explanation:

i dont really know i tried

Some scientists today believe that adaptations are more caused or provoked by the fact of competition.

What is meant by Adaptation?

Adaptation may be defined as the process that significantly involves the modification of internal and external attributes of organisms that makes them fit for survival and reproduction in the natural environment.

Competition is because of the fact that as the diversity of organisms increases, the resource limits remarkably enable the organisms to activate the mechanism of competition. Due to this, each and every species makes itself superior in order to make their survival in the natural environment.

Therefore, some scientists today believe that adaptations are more caused or provoked by the fact of competition.

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How does the movement of water, carbon, and nitrogen in ecosystems differ from the movement of energy?

Please help me this is due today, thank you if you do^^

Answers

Answer:

While water, carbon, and nitrogen cycle through the ecosystem, energy flows through an ecosystem.

Explanation:

There is a limited amount of water, carbon, and nitrogen in an ecosystem, and therefore, it cycles and passes through an ecosystem multiple times. In the case of energy, however, it is different. Energy goes into a system, flows from organism to organism, and then leaves the system. For example, with water, that water will rain, gather in a river or body of water, and evaporate, doing the cycle over and over again. Energy from the sun however, gets collected by producers, then flows to the organism that eats the plant, then flows to the organism that eats that organism, and so on. The energy does not return to the sun, it just leaves the system (like for example when an organism dies).

Distinguish between the different ways volcanoes cause damage.

Answers

Answer:

Hi! Your answer is:

The volcanic plume of an eruption is the pyroclastic flow which sends large amounts of ash and rock into the air and along the ground surrounding the volcano. When this ash and rock mixes with water it forms lahars which flows down the slopes of volcanoes like a landslide, clearing everything in its path. The rocks thrown into the air by the pyroclastic flow, tephra, fall to the ground causing damage where they strike. Toxic gases released through fumaroles can result in acid rain, air pollution and can deplete atmospheric ozone. And of course molten rock emitted from volcanoes as lava flows in streams down volcanoes destroying vegetation and property wherever it touches.

Explanation:

Volcanoes emit deadly gases, ash, lava, and rock. Volcanic eruptions kill. Floods, mudslides, power outages, drinking water poisoning, and wildfires can follow volcanic eruptions, posing health risks.

What are volcanoes?

The pyroclastic flow that results after an eruption of a volcano is known as the volcanic plume. This flow transports significant quantities of ash and rock into the air and along the ground in the area surrounding the volcano. When this ash and rock combines with water, it generates lahars, which are similar to landslides and rush down the slopes of volcanoes like a river, sweeping away everything in their path.

When they hit the ground, the rocks that were thrown into the air by the pyroclastic flow, known as tephra, cause damage to the area where they land. Toxic chemicals that are emitted by fumaroles have the potential to cause acid rain, contribute to air pollution, and reduce the amount of ozone in the atmosphere.

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Except for a pairing of sex chromosomes, homologous
chromosomes_______.

a. carry the same genes
b. are the same shape
c. are the same length
d. all of the above​

Answers

Answer:

Homologous chromosomes carry the same genes and have the same shape and length, so all the choices are correct.

Explanation:

The homologous chromosomes are so called because each of them has the same DNA molecule, giving rise to the same genes, distributed in the same location within the chromosome.

Somatic cells are diploid, which means that the genetic information that determines specific characteristics is distributed in pairs. Each of the chromosomes that form a pair comes from the father and mother, and the members of a pair are known as homologous chromosomes.

The homologous chromosomes are characterized by having the same shape and size, and contain the same genes, although the information contained in them —the alleles— may be different. Hence the possibility that one allele is dominant and another recessive on two chromosomes of a pair.

name the four stages of the production process ( food and raw materials) PLEASE HELP

Answers

Answer:

There is no way around it: food production must become sustainable. Norway is striving to do its share with the help of ground-breaking technology. Sustainable development

process associated with moving carbons from glucose to mitochondion

Answers

Answer:

Glucose passes through a series of catabolic reactions in the process of cellular respiration. First, glucose is split in the cytoplasm in the process of glycolysis. The resulting end-productsmove into the mitochondria and go through a preparatory step to the Krebs cycle, and finally to the electron transport system.

what effect would constriction of the blood vessels have in the body

Answers

Answer:

higher blood pressure

Explanation:

when the vessels constrict they get smaller therefore in order for the blood to be pumped through the body the heart would have to work harder resulting in a higher blood pressure

Answer:

increased blood pressure resulting in risk of heart attack

What is one way to add oxygen to the atmosphere?

Answers

Answer:

Plants use sunlight and carbon dioxide to produce oxygen through the process of photosynthesis.

Explanation:

They are the main creators of the oxygen in the atmosphere.

Identify the structure labeled C

A. Phosphate
B. Nucleotide
C. Base
D. Sugar

Answers

C. Base

In DNA there are 4( sometimes 5) types of bases: adenine, guanine, thymine. They are the BASES

Hope that helps :)!

Which of the following lists the levels of body organization from least complex to most complex?

Answers

Answer:The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

Explanation:

which natural resource provide us paper is it renewable​

Answers

wood fibers
Paper is based on wood fibers, a natural and renewable resource that can be planted, grown, harvested, and replanted. In fact, each year, forests in the US and Canada grow significantly more wood than they harvest.

Answer:

Wood fiber. Is a renewable resource, that is used to make paper.

Once they cut the wood from the trees they'll then be wood fibers. They will color the wood as well. White, Pink, Blue, etc. Then once the paper has gone through production in a factory, there is now paper.

Hope this helped.

Which of the following is a property of matter in the liquid
state?

Answers

Answer:

the answer is- the element

Explanation:

reason for my answer is because only two element are liquid at standard conditions for temperature and pressure: mercury and bromine.

50 points: write 3 paragraphs on the difference of asexual and sexual reproduction and why is asexual better

Answers

Answer:

When an organism makes more of itself without the exchang of genetic information with another organism through sex, the reproduction is asexual.

while

In sexual reproduction, the exchange of dna and other genetic material is required as it involves two separate organisms.

Finally

Asexual is better in terms of time, less energy and only one organism (the parent cell) is needed for the process.

Define coefficient to show its scientific meaning

Answers

Answer:

In science, a coefficient is a constant term related to the properties of a product.  In chemistry, when you see a number in front of a chemical like 2H2o, you're looking at the coefficient.

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