Question

5 what is the significance of three consecutive nucleotides in dna?
a they code for one amino acid.
b they code for three amino acids.
c they code for one complete protein.
d they code for three complete proteins.

6 a cell experiences an error during the cell cycle, causing it to go through cytokinesis before mitosis. which statement best describes the new cells?
a the new cells will be double the size of the original cell.
b the new cells will have twice as much dna as the original cell.
c the new cells will have no dna or organelles but will continue progressing through the cell cycle.
d the new cells will have an incorrect amount of dna and organelles, and will likely experience cell death.

Explanation:

Question 5

In DNA, a codon (three consecutive nucleotides) codes for one amino acid. Option B is wrong as one codon doesn't code for three amino acids. Option C is wrong because a single codon can't code for a complete protein (proteins are made of multiple amino acids coded by multiple codons). Option D is also wrong for the same reason as C and the codon - amino acid relationship. So the correct option is A.

During the normal cell cycle, mitosis (nuclear division) occurs before cytokinesis (cytoplasmic division). If cytokinesis happens before mitosis, the cell will divide before the nucleus (and DNA) has properly divided. So the new cells will have an incorrect amount of DNA and organelles. Option A is wrong because the cells would be smaller as division happened prematurely. Option B is wrong as the DNA wouldn't have been properly replicated and divided. Option C is wrong because the new cells would still have some DNA and organelles, just an incorrect amount. So the correct option is D.

Answer:

A. They code for one amino acid.

Question 6