DNA and Evolution [Subject SAT (College Board) Biology]: Questions 9 - 12 of 134

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Question number: 9

DNA and Evolution
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Question

MCQ▾

Cells of certain species of animals have six pairs of chromosomes. How many molecules of DNA will remain in the nucleus of these animals during

Choices

Choice (5)Response

a.

48

b.

24

c.

12

d.

6

e.

None of the above

Question number: 10

DNA and Evolution
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Question

MCQ▾

The restriction endonuclease is having a defence mechanism in bacterial system against foreign DNA such as viruses. But how it is able to protect its own DNA?

Choices

Choice (5)Response

a.

By phosphorylation of foreign DNA by restriction enzyme

b.

By methylation of bacterial DNA by restriction enzyme

c.

By phosphorylation of bacterial DNA by restriction enzyme

d.

By methylation of foreign DNA by restriction enzyme

e.

Question does not provide sufficient data or is vague

Question number: 11

DNA and Evolution
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Question

MCQ▾

DNA is the genetic material in the

Choices

Choice (5)Response

a.

Viruses and eukaryotes

b.

Only in eukaryotes

c.

Prokaryotes and eukaryotes

d.

In some viruses, prokaryotes and eukaryotes

e.

Question does not provide sufficient data or is vague

Question number: 12

DNA and Evolution
Edit

Question

MCQ▾

Single stranded unpaired extensions formed by restriction enzyme upon cleavage is called as

Choices

Choice (5)Response

a.

flush ends

b.

blunt ends

c.

sticky ends

d.

All of the above

e.

Question does not provide sufficient data or is vague