22. Where does glycosylation of proteins initially occur? (A) In the cytosol (B) In the Golgi apparatus (C) In the endoplasmic reticulum (D) In the plasma membrane (E) In the ribosomes

25. Both excitatory and inhibitory neurons form junctions with muscles. By what mechanism do inhibitory neurotransmitters prevent the postsynaptic cell from firing an action potential? (A) By closing Na⁺ channels (B) By preventing the secretion of excitatory neurotransmitters (C) By opening K⁺ channels (D) By opening Cl⁻ channels (E) By blocking voltage-gated Ca²⁺ channels

22. Where does glycosylation of proteins initially occur?
(A) In the cytosol
(B) In the Golgi apparatus
(C) In the endoplasmic reticulum
(D) In the plasma membrane
(E) In the ribosomes

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