Biochemistry

The three identical b subunits of the F1, complex during ATP synthesis have

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Question: The three identical b subunits of the F1, complex during ATP synthesis have
[A].

different affinities for ATP but not for ADP

[B].

different affinities for ADP but not for ATP

[C].

different affinities for ATP and for ADP

[D].

similar affinities for ADP and ATP

Answer: Option C

Explanation:

No answer description available for this question.

Membrane potential and the proton gradient

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Question: Membrane potential and the proton gradient
[A].

are both required to make ATP

[B].

are sufficient, separately, to make ATP from ADP + Pi;

[C].

reinforce one another when respiratory inhibitors are present

[D].

cancel one another when uncouplers are present

Answer: Option A

Explanation:

No answer description available for this question.

A pathogen can be a (n)

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Question: A pathogen can be a (n)
[A].

agent that causes a disease

[B].

virus

[C].

bacteria

[D].

All of these

Answer: Option D

Explanation:

No answer description available for this question.

CD antigens

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Question: CD antigens
[A].

allow leukocytes to recognize antigen

[B].

are each expressed on only one cell type

[C].

are expressed on immune cells to mark them for separation

[D].

function as receptors for cytokine and CAMs

Answer: Option D

Explanation:

No answer description available for this question.

Which of the following is incorrect with regard to antigen epitopes?

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Question: Which of the following is incorrect with regard to antigen epitopes?
[A].

An epitope may be shared by two different antigens

[B].

A protein molecule usually contains multiple epitopes

[C].

B cells bind only processed antigen epitopes

[D].

Epitopes may be linear or assembled

Answer: Option C

Explanation:

No answer description available for this question.

For specific antigen recognition by T cells,

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Question: For specific antigen recognition by T cells,
[A].

antigen is bound by a T cell membrane antibody

[B].

denaturation of antigen does not reduce epitope recognition

[C].

MHC molecules are not required

[D].

antigen exposure during T cell maturation is required

Answer: Option B

Explanation:

No answer description available for this question.