A genetic defect in the ?5 gene would cause which of the following consequences? (Select all that apply.)

a. inability to produce functional ? chains
b. inability to produce a pre-B-cell receptor
c. inability to produce functional ? or ? chains
d. production of different light chains owing to defects in allelic exclusion
e. B-cell immunodeficiency
f. chronic bacterial infections
g. requirement for prophylactic injections of antibodies from healthy donors.


b, e, f, g

Health & Biomechanics

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What is the primary damage caused to the cardiovascular system due to stress?

What will be an ideal response?

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A device that sends an electrical shock to the heart to restore a normal heart rhythm is abbreviated as a(n) ________.

Fill in the blank(s) with the appropriate word(s).

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What molecules-critical to all body processes-are proteins??

A) ?polysaccharides B) ?free radicals C) ?antibodies D) ?enzymes E) ?sterols

Health & Biomechanics