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Chapter 12: Amino Acids

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Amino acid is a compound which has at least one

a)

A. Amino group and one amide group

b)

B. Amino group and one hydroxyl group

c)

C. Amino group and one carboxyl group

d)

D. Hydroxyl group and one carbonyl group

2.
The bond that joins amino acids are called:
a)
Peptide Bonds
b)
Ester Bonds
c)
Glycosidic Linkages
d)
Phosphodiester Bonds
3.

Amino acid that contain two chiral centres

a)

Isoleucine

b)

Phenylalanine

c)

Tryptophan

d)

Histidine

4.

Which of the following statements is TRUE about HOCH2COOH and H2NCH2COOH?

a)

A. Both are insoluble in water.

b)

B. Both can form zwitterion.

c)

C. Both can be obtained from hydrolysis of protein.

d)

D. Both can easily dissolve in sodium hydroxide solution.

5.

Which reagent cannot react with aminoethanoic acid, H2NCH2COOH ?

a)

A. C6H5COCI (l)

b)

B. Acidified KMnO4

c)

C. HNO2 (aq)

d)

D. C2H5OH (l)

6.

Reagent that cannot react with H2NC(CH3)2COOH is

a)

A. NaOH (aq)

b)

B. Br2 (aq)

c)

C. HNO2 (aq)

d)

D. NaHCO3 (aq)

7.

Which molecule is optically active?

a)

A. 2-aminoethanoic acid

b)

B. 2-aminopropanoic acid

c)

C. 3-amino-3-methylbuthanoic acid

d)

D. 2-amino-2-methylpropanoic acid

8.

What is the monomer of Proteins?

a)

Nucleotides

b)

Amino Acid

c)

Fatty Acids

d)

Monosaccharides

9.

Which bond is present between two amino acids?

a)

Glycosidic Bond

b)

Phosphodiester bond

c)

Ester Bond

d)

Peptide Bond

10.
The diagram shows a bond forming between two amino acids. What is the name of this reaction?
a)
Dehydration Synthesis
b)
Hydrolysis
c)
Pepysis
d)
Oxidation