Alanine and lysine are both amino acids. Not eating enough lysine can lead to protein deficiency, whereas not eating enough alanine does not lead to protein deficiency. Why is this the case?

Question

A. Alanine can be synthesized by cellular
biochemical pathways, whereas lysine
cannot.
B. Alanine can be easily replaced by other
amino acids in protein synthesis, whereas
lysine cannot.
C. Lysine is needed in much larger quantities
for protein synthesis than alanine.
D. The body has a more difficult time
absorbing lysine than alanine, so more must
be consumed to avoid protein deficiencies.
E. All of the answer options are correct.

Answer 1

A