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ad-work [718]
2 years ago
8

The bonds that hold the two stands of DNA together come from

Biology
2 answers:
vlada-n [284]2 years ago
7 0

The chemical bonds that hold the two strands of DNA together are hydrogen bonds.

  • Deoxyribonucleic acid (DNA) is a double helix composed of two long chains of nucleotides linked together via hydrogen bonds.

  • In DNA, there are four different classes of nucleotides, each one containing one different nitrogenous base (i.e., Adenine, Thymine, Guanine and Cytosine).

  • According to the base pair rules, Adenine always pairs with Thymine via two hydrogen bonds, whereas Cytosine always pairs with Guanine via three hydrogen bonds.

In conclusion, the chemical bonds that hold the two strands of DNA together are hydrogen bonds.

Learn more about hydrogen bonds here:

brainly.com/question/879463

LUCKY_DIMON [66]2 years ago
3 0

Answer:

The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.

Explanation:

:)

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How are the processes of photos sentences and saw your respiration opposites of one another
dimaraw [331]

Answer:

This question is not well structured. Based on understanding, the correct structure should be: How are the processes of photosynthesis and respiration opposites of one another?

They are opposite because photosynthesis uses the products of cellular respiration and vice versa.

Explanation:

Photosynthesis and cellular respiration are both metabolic processes that occurs within the cells of living organisms. Photosynthesis is the process where green plants synthesize food (sugar) in the presence of sunlight using carbon dioxide (CO2) and water (H2O). The general equation is as follows:

6CO2 + 6H2O → C6H12O6 + 6O2

On the other hand, respiration is the process whereby cells of living organisms synthesize usable energy (ATP) for use by breaking down glucose (C6H12O6) in the presence of oxygen. The equation is as follows:

C6H12O6 + 6O2 → 6CO2 + 6H2O

Based on the observation of the reactants and products of each process, it can be realized that the PRODUCTS of one process is the REACTANTS of the other. In other words, photosynthesis makes use of CO2 and water as REACTANTS, which are the PRODUCTS of respiration while cellular respiration uses glucose and oxygen as REACTANTS, which are PRODUCTS of photosynthesis.

4 0
3 years ago
. If a person comes in contact with this same virus years later, what does our body produce to get rid of or kill the virus
borishaifa [10]

If a person comes in contact with this same virus years later, our body produces antibodies to get rid of or kill the virus

Explanation:

When a person is infected by a virus, the infected person's body develops antibodies as an immune response to act against the virus. Antibodies are produced as part of humoral immunity.

Antibodies work by neutralizing the viral activity, agglutination,  phagocytosis or by complement system.

Antibodies are protein compounds which can recognize the invading pathogens and attack them.

Antigens or viral proteins in the virus leads to the production of antibodies in the host's body.

The specific antibodies triggers innate immune response upon detecting specific viral antigens when infected and will help the body to get rid of  or kill the virus.

6 0
3 years ago
During gas exchange, where does the co2, which is released from the lungs, originate?
andre [41]

The answer is it is a waste product produced by cellular respiration. During Gas exchange in the lungs, oxygen replaces carbon dioxide, and oxygen, oxygenates blood that spreads throughout the body, the Carbon Dioxide, which is expelled from the lungs originated from the cellular respiration, which occurred inside the body.

7 0
4 years ago
HELP PLEASE TEACHER MADE NO SENSE
Yuliya22 [10]

Answer:

Mitochondria.

Reactants of cellular respiration are glucose and oxygen.

Explanation:

Mitochondria is the location of cellular respiration where glucose is broken down in the presence of oxygen into energy in the form of ATP. When a glucose molecule is broken down with the help of oxygen, it produces energy, carbondioxide gas which is a waste material and water. There are three products of cellular respiration such as energy, carbondioxide and water. Energy is used by the organism in different activities while carbondioxide gas and water are removed from body through breathing. Using of glucose by mitochondria and converted into energy in the form of ATP is the energy flow.

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3 years ago
____ is any named group of organisms, whether they form a clade or not. A.Clade B.Node C. Taxa
Veronika [31]
C. Taxa



.............................
4 0
4 years ago
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