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What type of compound dissipates the proton gradient so electron transport continues but ATP synthesis drops?

Insulin is released in the fed state. How does insulin influence cholesterol synthesis?

What is the primary function of ubiquinone (coenzyme Q) in the electron transport chain?

Which of the following systems enables long-chain fatty acids to be transferred across the inner mitochondrial membrane?

What is the major biological role of malonyl-CoA in metabolism?

A researcher proposes a drug that inhibits isocitrate dehydrogenase in cancer cells to slow their growth. Based on your understanding of the citric acid cycle, which of the following is the most reasonable prediction about the metabolic consequences of this inhibition?

What is the primary function of the α₃β₃ hexamer in ATP synthase?

The citrate synthase reaction in the citric acid cycle combines oxaloacetate with acetyl-CoA to form citrate. This condensation is thermodynamically unfavorable under standard conditions. What makes the overall process energetically favorable?

Which process in the citric acid cycle directly generates GTP (or ATP) by substrate-level phosphorylation?

Under which metabolic conditions would urea production by the urea cycle be expected to be at its lowest level?