Sequencing of HIV-1 revealed that it is most

closely related to which of the following?
a. simian immunodeficiency virus
b. feline immunodeficiency virus
c. bovine immunodeficiency virus
d. hepatitis B
e. all of these


A

Biology & Microbiology

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Indicate whether the statement is true or false.

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Many physical features dictate life in an estuary. The physical feature with the most influence on organismal distribution is

A) light. B) nutrients. C) salinity. D) temperature.

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The sebaceous glands associated with hair follicles produce ________

A) sweat B) sebum C) androgens D) keratin

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Distinct regions of a protein that fold independently of one another are called:

A) domains B) alpha helices C) amino acids D) hydrophobic E) side chains

Biology & Microbiology