DNA and Evolution [Subject SAT (College Board) Biology]: Questions 35 - 40 of 134

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Question 35

DNA and Evolution
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Question

MCQ▾

Gene expression is activation of a gene to produce a specific ________.

Choices

Choice (5)Response

a.

amino acid

b.

protein

c.

DNA

d.

t-RNA

e.

All of the above

Question 36

DNA and Evolution
Edit

Question

MCQ▾

RNA required for the protein synthesis

Choices

Choice (5)Response

a.

tRNA

b.

mRNA

c.

rRNA

d.

All a. , b. and c. are correct

e.

None of the above

Question 37

DNA and Evolution
Edit

Question

MCQ▾

DNA unwinding is done by

Choices

Choice (5)Response

a.

Helicase

b.

Topoisomerase

c.

Ligase

d.

Hexonuclease

e.

None of the above

Question 38

DNA and Evolution
Edit

Question

MCQ▾

Which evidence doesn’t carry Lamarckian concept of inheritance of acquired characters?

Choices

Choice (5)Response

a.

Absence of limbs in snakes

b.

Melanization in peppered moth

c.

Lack of pigment in cave-dwelling animals

d.

Presence of webbed toes in aquatic birds

e.

Question does not provide sufficient data or is vague

Question 39

DNA and Evolution
Edit

Question

MCQ▾

What is not true regarding nucleic acids?

Choices

Choice (5)Response

a.

RNA is seldom double stranded

b.

One turn of Z-DNA has 12 bases

c.

Length of one helix is 45A° in B-DNA

d.

DNA is single stranded in few viruses

e.

All of the above

Question 40

DNA and Evolution
Edit

Question

MCQ▾

ATP is

Choices

Choice (5)Response

a.

nucleoside

b.

nucleic acid

c.

vitamin

d.

nucleotide

e.

None of the above