Unit 4

Question 1

Describe the structure of protein

Answer 1

• strands of amino acids

Amino acid structure:
- AA = building block of protein
- contains N = ~20 AAs
- 1 C atom (backbone) + amino group (N) + acid group + side group
- sequence of AAs determine shape and function

Question 2

Difference between Non-Essential and Essential AAs

Answer 2

Non-Essential: body can synthesize
Essential: body cannot synthesize

Question 3

Dipeptide vs Tripeptide vs Polypeptide

Answer 3

Dipeptide: 2 AAs bonded
Tripeptide: 3 AAs bonded
Polypeptide: more than 10 AAs bonded
- Oligopeptide = 4-10 AAs