B1.2

Question 1

What is a protein?

Answer 1

Macromolecules with one or more amino acids (linked monomers)

Question 2

What is the general amino acid structure comprised of?

Answer 2

amino + side chain + carboxyl

Question 3

What is a peptide bond?

Answer 3

Covalent and stable bond between carboxyl and amino of two molecules

Question 4

Condensation reactions for dipeptides

Answer 4

Peptide bonds form a dipeptide bond

amino acid + amino acid -> dipeptide + water

Question 5

What is free to form more peptide bonds to form polypeptides in proteins?

Answer 5

Carboxyl (c) - terminal and amino (N) - terminal

Question 6

Essential amino acids

Answer 6

obtained from food, used for growth and repair

Question 7

Non-essential amino acids

Answer 7

Recycled or produced by the body from other broken down proteins

Question 8

Which side of the peptide are new amino acids added to?

Answer 8

c terminal

Question 9

What happens if the R group in an amino acid is nonpolar?

Answer 9

The amino acid will be hydrophobic

Question 10

List a protein with an alpha-helical structure

Answer 10

keratin

Question 11

Amino acids in collagen

Answer 11

19

Question 12

Amino acids in lysozymes

Answer 12

129

Question 13

Amino acids in alpha neurotoxins

Answer 13

60-75

Question 14

Amino acids in glucagon

Answer 14

29

Question 15

Amino acids in myoglobin

Answer 15

153

Question 16

What happens if the R group in an amino acid is polar?

Answer 16

The amino acid will be hydrophilic