24. What is the driving force for the secondary active transport mechanism? (A) Concentration gradients of ions like Na⁺ or H⁺ (B) Hydrolysis of ATP (C) Light energy (D) Phosphorylation (E) Hydrolysis of glucose

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

24. What is the driving force for the secondary active transport mechanism?
(A) Concentration gradients of ions like Na⁺ or H⁺
(B) Hydrolysis of ATP
(C) Light energy
(D) Phosphorylation
(E) Hydrolysis of glucose

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