Mcqs On Amino Acids
Amino acids are the building blocks of proteins. There are 20 amino acids present in proteins. Amino acids are organic compounds, which can be referred to as substituted methanes. The 𝜶 carbon has an amino group, carboxylic group, hydrogen and variable R group. There are 9 essential amino acids and 11 non-essential amino acids.
Which of the following is not a polymer?
Carbohydrates
(b) Nucleic Acids
(c) Proteins
(d) Lipids
2. The simplest amino acid is Glycine
Glycine
(b) Alanine
(c) Asparagine
(d) Tyrosine
Amino acids are mostly synthesized from smaller molecules.
(a) Fatty Acids
(b) Mineral Salts
𝜶-Ketoglutaric Acid
(d) Volatile Acids
4. Amino Acids with an Aliphatic ‘R’ Group
(a) Glycine, Alanine, Leucine
(b) Serine, Threonine, Cysteine
(c) Lysine, Arginine, Histidine
(d) Phenylalanine, Tyrosine, and Tryptophan
Which of the following amino acids does not need to be obtained from the diet?
(a) Histidine
(b) Threonine
(c) Serine
(d) Lysine
An amino acid that produces acetyl CoA during catabolism is
(a) Ketogenic
(b) Glucogenic
(c) Essential
Both glucogenic and ketogenic
The first amino acid of any polypeptide chain in eukaryotes is typically methionine.
Valine
(b) Methionine
(c) Glycine
(d) Alanine
Amino acids with aromatic side chains include phenylalanine, tyrosine, and tryptophan.
(a) Tryptophan, Asparagine, Tyrosine
(b) Tryptophan, Threonine, Tyrosine
(c) Phenylalanine, Tryptophan, Serine
(d) Phenylalanine, Tryptophan, Tyrosine
Nine of the naturally occurring proteins consist of
(a) D-amino acids
(b) L-Amino Acids
(c) Both (a) and (b)
None of these
Which of the following amino acids must be supplemented in the diet?
(a) Phenylalanine
(b) Cysteine
(c) Glutamine
(d) Asparagine
Answers
Answers:
| 1. (d) | 2. (a) | 3. (c) | 4. (a) | 5. (c) |
| 6. (a) | 7. (b) | 8. (d) | 9. (b) | 10. (a) |
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