Amino acids $($L$.$O$.6\mathrm{.}1)$ and their sources $($L$.$O$.6\mathrm{.}6)$

Proteins are made from amino acids. Our bodies build proteins using dietary$$amino acids, that means, in order to build the proteins we need to function, it is necessary to get amino acids from foods.$$

Essential amino acids$$are the$9$ amino acids that cannot be synthesized by$$our$$body and it is necessary to have them$$all$$in our food. The $9$ essential amino acids are$$histidine$,$ isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine $($There is no need to memorize them, but keep this list handy$).$

Nonessential$$amino acids$$are the remaining $11$ amino acids. If you have enough protein,$$your$$body$$will be able to$$synthesize them on its own, so it is$$not necessary$$to have them in our food. The non$-$essential amino acids are:$$arginine$,$ glutamine, tyrosine, cysteine, glycine, proline, serine, ornithine, alanine, asparagine and aspartate. You don't need to memorize these names, but just know that these names correspond to amino acids.$$

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From the following list, select all those that are essential amino acids

Group of answer choices

protein

lysine

$-$linolenic acid

glucose

tryptophan

glutamine

arginine