Amino acids: practice question

The best answer is D, Arginine. This item reviews Amino acids; Arginine is the best answer because it directly matches the biochemical or pathological mechanism described.

Leucine does not fit the stated mechanism.

Lysine is plausible but not the best answer.

Valine is unsupported by the key finding.

It tests Amino acids in Biochemistry. The correct option holds because: Correct. Arginine fits the defining feature.

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.