Question

1. there are conditionally essential amino acids.

6
9
11
13

1. which of the following lists of amino acids contain all essential amino acids?

valine, threonine, lysine, methionine
glutamine, proline, tryptophan, histidine
tyrosine, arginine, phenylalanine, cysteine
phenylalanine, methionine, glycine, serine

Explanation:

• For question 5, there are 6 conditionally essential amino - acids.
• For question 6, the essential amino - acids are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. The first option contains several essential amino - acids. Glutamine, proline, tyrosine, arginine, cysteine, glycine, and serine are not essential amino - acids.

Answer:

1. 6
2. Valine, threonine, lysine, methionine