In cells that are constantly involved in secretion, an equivalent amount of membrane must be returned to the interior of
the cell for each vesicle that fuses with the plasma membrane; if this does not occur, then what would happen?
a. The cell surface would shrivel.
b. The cell surface will keep expanding.
c. The surface area would remain constant.
d. The number of membrane receptor proteins would decrease.
e. The ratio of cell surface would decrease, compared to cell volume.
b
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Which structure-function pair is mismatched?
A) nucleolus â€" production of ribosomal subunits B) lysosome â€" intracellular digestion C) ribosome â€" protein synthesis D) Golgi â€" protein trafficking E) microtubule â€" muscle contraction
Mutations are
a. random. b. beneficial. c. always lethal. d. always heritable. e. largely predictable.
Leptospira interrogans exits the body in (feces/aerosols/urine)
What will be an ideal response?
Which statement about nematodes is most accurate?
A) They are mainly crop pests. B) They are mainly parasites. C) They all have straight, flattened bodies. D) They have exoskeletons made of cellulose. E) They fit into numerous ecological roles including detritivores.