Viruses that naturally cause clumping of red blood cells can be diagnosed using a(n) ________ test.

A. agglutination
B. complement fixation 
C. viral hemagglutination
D. both agglutination and complement fixation 
E. viral neutralization


Answer: C

Biology & Microbiology

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Insertion or deletion of a nucleotide in a gene causes a type of mutation called a(n) ____________________ mutation

Fill in the blank(s) with correct word

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Into which group would you place a unicellular organism that has 70S ribosomes and a peptidoglycan cell wall?

A) Animalia B) Bacteria C) Fungi D) Plantae E) Protist

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The immunoglobulin class that has an Fc region that binds to receptors on basophils and mast cells is

A. IgD. B. IgM. C. IgA. D. IgG E. IgE.

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Streptococcal pharyngitis involves all the following, except:

A. a purulent exudate over the tonsils. B. can lead to scarlet fever if it is an erythrogenic toxin-producing strain. C. can lead to serious sequelae. D. is usually caused by the viridans streptococci. E. causes redness, difficulty in swallowing, and fever.

Biology & Microbiology