Chemical Constituents of Living Cells : Biomolecules-Structure and Function of Proteins, Carbodydrates, Lipids, Nucleic Acids; Enzymes-types, Properties, Enzyme Action, Classification and Nomenclature of Anzymes NEET Questions

Biology - Cell Structure and Function

Chemical Constituents of Living Cells : Biomolecules-Structure and Function of Proteins, Carbodydrates, Lipids, Nucleic Acids; Enzymes-types, Properties, Enzyme Action, Classification and Nomenclature of Anzymes MCQ Questions


7.
How many amino acids are commonly found in proteins?
A.
16
B.
20
C.
26
D.
10
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ANSWER :
B. 20
8.
Which amino acid has a hydrogen atom as its R-group?
A.
Alanine
B.
Valine
C.
Glycine
D.
Serine
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ANSWER :
C. Glycine
9.
Tyrosine, tryptophan, and phenylalanine are classified as:
A.
Acidic amino acids
B.
Aromatic amino acids
C.
Sulfur-containing amino acids
D.
Basic amino acids
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ANSWER :
B. Aromatic amino acids
10.
Lysine, arginine, and histidine are:
A.
Basic amino acids
B.
Acidic amino acids
C.
Hydrophobic amino acids
D.
Neutral aromatic amino acids
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ANSWER :
A. Basic amino acids
11.
Glutamic acid and aspartic acid are:
A.
Aromatic amino acids
B.
Acidic amino acids
C.
Sulfur-containing amino acids
D.
Basic amino acids
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ANSWER :
B. Acidic amino acids
12.
Cysteine and methionine are characterized by:
A.
Sulfur in their R-groups
B.
Multiple amino groups
C.
Hydroxyl groups only
D.
Aromatic rings
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ANSWER :
A. Sulfur in their R-groups