The bulk of the reabsorption of useful materials by the kidney takes place in the
A. renal corpuscle.
B. proximal convoluted tubule.
C. loop of Henle.
D. distal convoluted tubule.
E. collecting ducts.
B. proximal convoluted tubule.
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A ________ assay is most useful for determining the viability of a viral preparation.
A. PCR B. plaque C. hemagglutination D. direct (electron microscopic) count
The antibody-secreting progeny cells of a B-cell clone are called
A. sensitized T cells. B. plasma cells. C. activated macrophages. D. bursa cells. E. antibodies.
The HIV viral envelope protein gp120 binds to the host cell CD4 receptor.
Answer the following statement true (T) or false (F)
What would be a consequence of a mutation that disables the production of cyclin-dependent kinases (Cdks)?
A) Telomere length would be shortened significantly. B) The nuclear envelope would disintegrate. C) Cell-cycle control would not be possible. D) DNA would not contain any phosphate groups.