Question

1. how many amino acids are involved in the reaction to make a dipeptide?
2. in model 1 the original amino acids are combined through a condensation reaction to make the dipeptide.

a. what does r₁ represent in the dipeptide?
b. what does r₂ represent in the dipeptide?

1. put a box around the atoms in the amino acids that become the h₂o molecule produced by the reaction in model 1.
2. a peptide bond is a covalent bond linking two amino acids together in a peptide.

a. circle the peptide bond in model 1.
b. between which two atoms in the dipeptide is the peptide bond located?
c. between what two functional groups is the peptide bond located?

1. there are 22 different amino acids found in nature. two were shown in model 1. additional examples are shown below. with your group, write one or two grammatically correct sentences to describe how these amino acids are similar and how they are different. use the terms r - group, amine group, and carboxyl group in your description.

glycine (gly)
cysteine (cys)
asparagine (asn)
phenylalanine (phe)

Explanation:

Step1: Answer question 4

A dipeptide is formed by the combination of two amino - acids.

Answer:

2

Step2: Answer question 5a

In a dipeptide, \(R_1\) represents the side - chain of the first amino acid.