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natali 33 [55]
3 years ago
10

If the DNA of a representative species from each of the major kingdoms was examined, the sequences coding for which of following

would be expected to be most similar?
Biology
1 answer:
lawyer [7]3 years ago
8 0

The given question is incomplete. The complete question is:

Question: If the DNA of a representative species from each of the major kingdoms was examined, the sequences coding for which of following would be expected to be most similar?

A.  Photosynthesis

B.  Cholesterol synthesis

C.  Protein modification

D.  DNA synthesis

Answer:

D.  DNA synthesis

Explanation:

DNA synthesis refers to the production of new DNA molecules by copying the sequence of existing parental DNA template strand. The process of DNA synthesis is exhibited by all the living organisms irrespective of the kingdom they belong to. The basic process of DNA synthesis is also the same in them. DNA polymerase is the main enzyme of DNA replication in all the organisms. Therefore, sequences coding for the proteins or enzymes involved in the process of DNA synthesis would be most similar among the organisms of each of the major kingdoms.

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Zigmanuir [339]

Answer and Explanation:

Protein is one of the most important molecules in our organism, being present in the composition of all elements, in addition to participating in several metabolic processes. This importance creates the need to study this molecule, however, to study it it is necessary to know the composition chemistry and the levels of structure it presents.

The chemical composition of proteins is related to amino acids, since protein is formed by them. In this case, we can say that the proteins have the same composition as the amino acids containing carboxylic acid and different amino groups, which is what determines the name and function of the amino acid.

In addition to chemical composition, the structure levels of proteins are extremely important, as they only function at a specific structural level. As for these levels, proteins can have a primary structure (there are more than two amino acids organized in a linear row), a secondary structure (when the primary structure turns into a helix species), a tertiary structure (formed by a more intense folding of the secondary structure providing the appearance of helices and leaves) and quarternary structure (when several tertiary structures are joined, allowing folding at the three-dimensional level. This is the functional structure of the protein).

5 0
3 years ago
A diagram of chloroplast stroma and thylakoid lumen showing chemical energy, ferredoxin, ferredoxin-N A D p reductase, A D P syn
antoniya [11.8K]

Answer:

If the electron transport system did not work, electrons from PSII would not be transferred to PSI. Ferredoxin would then have no electrons to transfer to NADP+ so NADPH would not be produced. This would also affect the light-independent reaction of photosynthesis because NADPH is needed in this reaction.

Explanation:

Edgenuity's Answer.

4 0
3 years ago
Which of the following is a part of the cell theory?
Mariulka [41]
1: D
2: B
3: B
4: C
5: D
8: A
9: D
10: A
6 0
3 years ago
Fossils of organisms that are different than today's organisms and are found in deeper rock layers indicates that
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Answer:

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Explanation:

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7 0
3 years ago
Like all enzymes, restriction endonucleases (REs) need to be handled very carefully to ensure that they do not denature. Which o
andriy [413]

Answer:

The correct answer is:  d. REs activity is best preserved by freezing the RE and thawing it out for brief periods of time as needed.

Explanation:

  • Restriction enzymes can be defined as endonucleases that can recognize specific nucleotide sequence in a DNA (Deoxyribonucleic acid) sequence and cause breakage of phosphodiester bond in the DNA at the target site. Hence, it has the capacity of cleaving a DNA sequence.
  • These are made up of proteins which are required to be present in the accurately folded conformation in order to function.
  • Any form of alteration in the three-dimensional structure of the protein induced due to physical, chemical, mechanical or physiological factors can cause denaturation of the protein which in turn can render the protein non-functional.
  • Freezing of restriction enzymes (REs) directly without the use of glycerol will cause the movement of water molecules within the proteins as well layering of water molecules on the protein surface.
  • At low temperature these water molecules change to ice crystals which can alter the conformation of the protein or can cause breakage of peptide bonds in the proteins by physical force.
  • This can cause the protein to get denatured and hence non-functional.
  • Hence, it is never advisable to preserve REs by freezing directly without glycerol.
  • Glycerol forms a layer around the protein molecules and prevents the protein molecules from coming into direct contact with the water molecules and hence prevents protein denaturation.
7 0
3 years ago
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