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) |

Biomolecules Class 11 Biology Ep 8 Chapter 9 Important Questions for NEET Zoology 2022 Exam

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