16. You are breathing in oxygen and breathing out carbon dioxide. Most of the carbon dioxide arises from(A) glucose in glycolysis.(B) NAD⁺ redox reactions in the mitochondrial matrix(C) NADH redox reactions on the inner mitochondrial membrane.(D) FADH₂ in the electron transfer system.(E) the oxidation of pyruvate, isocitrate, and α-ketoglutarate in the citric acid cycle.

1. Which of the following events does NOT occur during light absorption in the vertebrate eye? (A) The retinal component of rhodopsin change from cis to trans form. (B) Rhodopsin, a G protein-coupled receptor, triggers a signal transduction pathway to close Na⁺ channels in the plasma membrane. (C) The light stimulus passes from rods and cones to bipolar cells and horizontal cells and then to ganglion cells, whose axons compose the optic nerve. (D) As light absorption increases, the rhodopsin response causes an increase in the release of neurotransmitter. (E) When integrating information across the retina, horizontal cells connect the rods and cones, and amacrine cells join with bipolar cells and ganglion cells

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