AP (Advanced Placement) Biology: Questions 70 - 75 of 1309

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Question 70

Question MCQ▾

Methionine and tryptophan have:

Choices

Choice (5)Response

a.

Single codon for methionine and triple codon for tryptophan

b.

Double codon each

c.

Triple codon each

d.

Single codon each

e.

None of the above

Edit

Question 71

Question MCQ▾

In the active site, binding site is:

Choices

Choice (5)Response

a.

Holds substrate in place

b.

Where reaction occurs

c.

Alters the active site of the enzyme

d.

All of the above

e.

None of the above

Edit

Question 72

Question MCQ▾

Which enzyme is critical to the process referred to as PCR?

Choices

Choice (5)Response

a.

DNA gyrase

b.

DNA ligase

c.

RNA polymerase

d.

Reverse transcriptase

e.

DNA polymerase

Edit

Question 73

Question MCQ▾

Okazaki fragments are stitched together by

Choices

Choice (5)Response

a.

Primase

b.

Hydrogenase

c.

Ligase

d.

Question does not provide sufficient data or is vague

e.

All of the above

Edit

Question 74

Question MCQ▾

Which of the following sequences would hybridize most strongly to the sequence 5′ -ATTTGGGCCAATGGGCCCTTTAA-3′?

Choices

Choice (5)Response

a.

3′-TAAACCCCCAATCCCGGGAAATT-5′

b.

5′-TATTCCCGGTTACCCGGGAAATT-3′

c.

3′-TAAACCCGGTTACCCGGGAAATT-5′

d.

3′-ATTTGGGCCAATGGGCCCTTTAA-5′

e.

5′-ATTTGGGCCAATGGGCCCTTTAA-3′

Edit

Question 75

Question MCQ▾

The activity of an enzyme can be controlled by various conditions and factors. Which of the following is a substance that halts enzyme activity by binding irreversibly to the enzyme?

Choices

Choice (5)Response

a.

A cofactor

b.

A metabolic poison

c.

A coenzyme

d.

An inactivator

e.

A repressor

Edit