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Worksheets

Amino Acids and Proteins

Total questions: 10

Worksheet time: 10mins

Name
Class
Date
1.

What are peptides?

a)

polymer of α-amino acids

b)

polymer of β-amino acids

c)

polymer of carboxylic acids

d)

polymer of amides

2.

The chemical bonds between amino acids in the primary structure of proteins are

a)

Hydrogen bonds

b)

Disulfide bonds

c)

Peptide bonds

d)

Ester bonds

3.

Which statement is correct?

a)

All amino acids in nature are in L forms

b)

All amino acids are chiral

c)

In alpha amino acids, two functional groups are separated

by two carbon atom

d)

All natural amino acids have S-configuration

4.

Pick the correct "Non-polar" amino acid

a)
b)
c)
d)
5.

What is an amino acid , which contains a "Base" side chain ?

a)
b)
c)
d)
6.

What is an amino acid , which contains a "Acidic" side chain ?

a)
b)
c)
d)
7.

Which is the structure of isoleucine (pI 6.04) at pH 2.0 ?

a)

b)

c)

d)

8.

Which is incorrect when converting the three letter code of amino acids to one letter code?

a)

Glu = E

b)

Ser = S

c)

Asp = A

d)

Pro = P

9.

The primary structure of a protein refers to the:

a)
Order of amino acids
b)
α-Helix or β-Pleated Sheet
c)
Interaction of subunits
d)

Hydrogen Bonding

10.
What level of protein structure is this?
a)
Primary
b)
Secondary
c)
Tertiary
d)
Quaternary