Proteins- Amino Acids

Question 1

Contains Hydroxyl group in its side chain

Answer 1

serine

Question 2

T/F
Glutamine has an amide group

Answer 2

True

Question 3

Has a net positive charge at physiological ph

Answer 3

arginine

Question 4

T/F
Ionic bond occurs in non-polar side chains

Answer 4

false

Question 5

T/F
If pK is high, then acid has strong or high Ka.

Answer 5

FALSE

Question 6

. Histidine has 3 ionizable groups

Answer 6

True

Question 7

What are the amide derivatives of Glu and Asp

Answer 7

GLUTAMINE AND ASPARAGINE

Question 7

In computing the pI of histidine, which of the following pK
values do we get the average?

Answer 7

Pk2 and pKr

Question 8

In the titration of alanine from low pH to high pH, which
group dissociates first?

Answer 8

alpha carboxyl group

Question 9

The pK value of alpha amino group is around which pH?

Answer 9

9

Question 10

At isoelectric pH, what is the dominant form of aspartic
acid?

Answer 10

dipolar

Question 11

In the titration of aspartic acid, which form predominates at
pH 2?

Answer 11

fully protonated