Biology 11 Chapter - 2
Biological Molecules - 25
1.
Plants are able to make all amino acids from?
a) Glycerol
b) Lipid
c) Simpler substances
d) Complex substances
2.
Which one of the following is not attached with amino acids?
a) Amino group
b) Methane group
c) Carboxyl group
d) Hydrogen atom
3.
How many types of amino acids are biologically important?
a) 40
b) 30
c) 20
d) 50
4.
Amino acids are linked together by a bond called?
a) Covalent bond
b) hydrogen bond
c) Carbon bond
d) Peptide bond
5.
Peptide bond is formed between?
a) Amino group & carboxyl group
b) Methane group & carboxyl group
c) amino group & hydrogen atom
d) Amino group & methane group
6.
The bond between carbon & nitrogen is called?
a) Nitrogen bond
b) Peptide bond
c) carbon bond
d) Hydrogen bond
7.
The linkage between carboxyl & amino acid is called?
a) Carbon linkage
b) Amino linkage
c) carboxyl linkage
d) Nitrogen linkage
8.
The chain of amino acid joined by peptide bond is called?
a) Carbon chain
b) Hydrogen chain
c) Polypeptide chain
d) Nitrogen chain
9.
The linear sequence of amino acids in a polypeptide chain is called?
a) Primary structure
b) secondary structure
c) Quaternary structure
d) Tertiary structure
10.
Which one of the following is removed during peptide linkage?
a) Hydrogen
b) Carbon
c) Nitrogen
d) Water
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