Class I major histocompatibility complex molecules are found on ________ cells.

A. all anucleated
B. all nucleated
C. antigen-presenting
D. None of the choices are correct.


Answer: B

Biology & Microbiology

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Answer the following statements true (T) or false (F)

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Fumarate production is an oxidation reaction similar to the reactions that produce ?-ketoglutarate, and oxaloacetate, but with one key difference. What is it?

a. Fumarate production releases a water molecule. b. Carbon dioxide is released in this reaction. c. This reaction reduces FAD instead of NAD+. d. Fumarate production occurs twice per cycle.

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A neuron's membrane that maintains a charge difference across its surface in which the inside is more negative than the outside is called ________

A) graded potential B) resting potential C) action potential D) summation

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What is calmodulin, and what role does it play in signal transduction? What will be an ideal response?

Biology & Microbiology