Which pair of statements best describes an essential amino acid? It is an amino acid that contains peptide bonds. An example is proline.
It is an amino acid that contains nitrogen. An example is aspartic acid.
It is an amino acid that cannot be made by the body. It must be obtained from eating certain foods.
It is an amino acid that can be produced by the body. Vitamin supplements maintain healthy levels.

It is an amino acid that cannot be made by the body. It must be obtained from eating certain foods.

Explanation:

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

raits that your monster will have. the dna code for each trait is given, so you will need to go through the process of transcription and translation to determine what protein is being made and then match that with the corresponding trait. you may even include a picture of your monster if you are feeling creati