What would happen to the ATP yield of cellular respiration if

(a) The transporter that imports pyruvate into the mitochondria stopped working? Explain.

(b) The transporter that imports pyruvate into the mitochondria worked only at 10% of its normal capacity? Explain.

(c) The inner membrane of the mitochondria became affected by an antibiotic that prevented the buildup of a proton gradient. Explain.

ATP synthase started to make one ATP per proton. Explain.