AP (Advanced Placement) Biology: Questions 50 - 54 of 327

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Question number: 50

» DNA and Protein Synthesis

MCQ▾

Question

Which of the following is not a termination codon?

Choices

Choice (5) Response

a.

AUG

b.

UAG

c.

UAA

d.

UGA

e.

None of the above

Question number: 51

» Enyzmes and Metabolism

MCQ▾

Question

Which of the following components of the mitochondrial electron transport system transfers protons and electrons?

Choices

Choice (5) Response

a.

Coenzyme Q

b.

Cytochrome a

c.

ATP synthase

d.

Cytochrome c

e.

Cytochrome cl

Question number: 52

» Enyzmes and Metabolism

MCQ▾

Question

In glycolysis, how many steps are involved in converting glucose to pyruvate?

Choices

Choice (5) Response

a.

10

b.

5

c.

8

d.

3

e.

12

Question number: 53

» DNA and Protein Synthesis

MCQ▾

Question

Which of the following mutations is most likely to produce a lethal condition?

Choices

Choice (5) Response

a.

An inversion within a region coding for an intron within the mRNA coding for a critical enzyme

b.

A frameshift mutation within a region coding for an intron within the mRNA coding for a noncritical enzyme

c.

A point substitution within the region coding for the leader segment of the mRNA coding for a critical enzyme

d.

A silent mutation within a gene coding for a critical enzyme

e.

A point substitution within the TATAAT box within the promoter for the gene coding for a critical enzyme

Question number: 54

» Enyzmes and Metabolism

MCQ▾

Question

A person with a bacterial infection usually develops a fever. This fever helps protect the person by inhibiting the growth of bacteria because

Choices

Choice (5) Response

a.

Enzymes do not function as well at a temperature that is not optimal

b.

Bacteria reproduce more rapidly at higher body temperatures

c.

The higher temperature increases the metabolic rate of bacteria

d.

Fever blocks the synthesis of proteins in bacteria

e.

Sweating removes cofactors, required by bacteria, from the blood

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