Health workers working with diphtheria commonly receive a serum with antibodies against the pathogen. What type of immunity would this be?

a. active, natural immunity
b. passive artificial immunity
c. active, artificial immunity
d. passive, natural immunity


Ans: b. passive artificial immunity

Biology & Microbiology

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a. moderate; unnecessary b. moderate; vital c. small; unnecessary d. large; unnecessary e. small; vital

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What is a noncoding, repetitive DNA sequence at the end of chromosomes?

a. telomere b. guanine cap c. transposons d. telomerase e. tandem repeats

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____ is(are) NOT directly involved with transcription. 

A. Unzipping enzymes B. RNA polymerase C. Amino acids D. DNA

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Urine when compared with the initial filtrate, contains

a. more glucose b. less water, fewer minerals, and more urea c. decomposed of red blood cells d. concentrated amino acids

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