What are the essential amino acids your body needs for survival? Are there 13 or 23?

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What are the essential amino acids your body needs for survival? Are there 13 or 23?

2007-03-10 14:32:06 · 3 answers · asked by brandontremain 3 in Science & Mathematics ➔ Biology

3 answers

all twenty amino acids are necessary

2007-03-10 15:42:46 · answer #1 · answered by wesnaw1 5 · 0⤊ 0⤋

There are only 20 amino acids and all are necessary to make the many proteins that the body needs.

ANATONMY AND PHYSIOLOGY TEACHER

2007-03-11 01:07:31 · answer #2 · answered by CAROL P 4 · 0⤊ 0⤋

There are actually only 9 essential amino acids. They are, Phenylalanine
Leucine
Methionine
Lysine
Isoleucine
Valine
Threonine
Tryptophan

*Histidine is only for infants. Arginine is also for infants, uncertain if required for seniors.

2007-03-10 22:48:56 · answer #3 · answered by Endurance over speed, me over u! 2 · 0⤊ 0⤋