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 |
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 |
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 |
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 |
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′ |
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 |