Lipid metabolism: practice question

The best answer is A, Carnitine. Carnitine shuttles activated long-chain fatty acyl groups across the inner mitochondrial membrane, allowing beta-oxidation to generate acetyl-CoA, NADH, and FADH2 for energy production.

Albumin transports free fatty acids in plasma, not across the mitochondrial membrane.

Creatine buffers high-energy phosphate in muscle and brain.

Biotin is a cofactor for carboxylases.

It tests Lipid metabolism in Biochemistry. The correct option holds because: Correct: carnitine is required for mitochondrial entry of long-chain fatty acids.

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

Build one table of enzyme deficiency, disease, inheritance and key finding, then revise it by spaced recall. Then use the flashcards and the other Biochemistry questions on this site to test what stuck.

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.