Final answer:
There are nine essential amino acids, which can be remembered using the acronym 'HILL MPTTV'. Each letter stands for the first letter of an essential amino acid.
Step-by-step explanation:
In biology, specifically biochemistry, we have 20 amino acids that are essential for human life. Out of these, nine are considered essential amino acids because our bodies cannot create them, so we need to consume them in our diet. These nine essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. To remember these easier, there is an acronym: HILL MPTTV. Each letter of the acronym represents the first letter of one of the essential amino acids.
Learn more about Essential Amino Acids