HIV attacks a variety of cell types but the most critical are
A. red blood cells.
B. nerve cells.
C. platelets.
D. T helper cells.
D.
Biology & Microbiology
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In humans, gametes are different than other cells of the body in that they are _________
A. diploid B. haploid C. genetic mutations D. morphs E. None of the answers are correct
Biology & Microbiology
Which of these activities correlates with a reduced risk of Alzheimer’s disease?
a. electroconvulsive therapy b. smoking cigarettes c. playing a musical instrument d. taking vitamin supplements
Biology & Microbiology
Digestion is ________.
A. Only chemical B. Only mechanical C. Both mechanical and chemical D. Neither mechanical nor chemical
Biology & Microbiology
Which of the following is not a polymer of numerous monomer units?
A) a phospholipid B) a polypeptide C) an RNA molecule D) cellulose E) starch
Biology & Microbiology