Once ligand molecules bind to receptors in coated pits of a plasma membrane, the next step of receptor-mediated
endocytisis would be:
a. coating detaches from vesicle
b. coated vesicle forms by endocytosis
c. ligands separate from receptors, which are recycled
d. contents of secondary lysosome are digested and released into the cytosol
e. endosome fuses with primary lysosome, forming secondary lysosome
b
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If a lung were to be found in a mollusc, where would it be located?
A) mantle cavity B) coelom C) incurrent siphon D) visceral mass E) excurrent siphon
In the reaction A- +B ?A + B-, ____
A. molecule A is oxidized and molecule B is reduced. B. molecule A is reduced and molecule B is oxidized. C. molecules A and B are both reduced. D. molecule A is oxidized and molecule B is unchanged. E. molecules A and B are both oxidized.
Which individual is not an Arachnid?
a. Spiders b. Mites c. Ticks d. Scorpions e. Horseshoe crabs
After several years of drought, the beak sizes of the medium ground finches were on average, larger than they had been in previous generations. What kind of natural selection occurred?
a) sexual b) disruptive c) balancing d) directional