Amino Acids

Question 1

All amino acids are enantiomers. True or False?

Answer 1

False

Question 2

Treating an L-amino acid with a protease will …

a. Chop it up
b. Do nothing to it

Answer 2

Chop it up

Question 3

Bacteria synthesize the same amino acids for their proteins as humans. True or False?

Answer 3

True

Question 4

What properties of amino acids help us predict the consequences of mutations?

Answer 4

Amino acid side chain groups (e.g non polar, polar, charged)

Question 5

Two amino acids have to be ____ and ____ to avoid wrecking the structure of the protein in a point mutation.

Answer 5

Similar in polarity and Similar in size

Question 6

What is the difference between cysteine and cystine?

Answer 6

Cysteine is the name of the amino acid residue before it forms the disulphide bond. After it forms the disulphide bond, the amino acid residues are each called Cystine.

Question 7

What is the overall charge of a zwitterion?

Answer 7

0

Question 8

A zwitterion is a unipolar ion that has a negative charge. True or False

Answer 8

False.

Question 9

What is a zwitterion?

Answer 9

A dipolar ion with spatially separated positive and negative charges and usually an overall charge of zero.

Question 10

how many peptide bonds are in a hexapeptide?

Answer 10

5

Question 11

Peptides are named starting with which terminal?

Answer 11

N-terminal