NEET Biology MCQ on Amino acid with Answers by Expert Teacher. Every Objective Questions is Important and Common for NEET-UG Exam.
1) Which of the following is monomer of protein?
A) Fats B) Amino acid C) Monosaccharide D) Nucleotides
Answer: Answer is B, amino acid is monomer of proteins.
2) ——– are the organic compounds contains acidic and amino group.
A) Amino acid B) Fatty acid C) Nucleotides D) Lipids
Answer: Answer is A, amino acid contains both acidic and amino group.
3) How many standard amino acid are present in nature?
A) 20 B) 24 C) 23 D) 25
Answer: Answer is A, there are 20 naturally occurring amino acid present.
4) Which of the following is smallest amino acid?
A) Alanine B) Threonine C) Tyrosine D) Glycine
Answer: Answer is D, glycine is simple in structure and smallest amino acid.
5) When both the amino group and acidic group attached to same carbon atom called as ——-.
A) Standard amino acid B) Non standard amino acid C) alpha amino acid D) None of these
Answer: Answer is C, alpha amino acid has both the amino group and acidic group attached to same carbon atom.
6) The amino acid which are incorporated into protein are called as ——–.
A) Standard amino acid B) Non standard amino acid C) alpha amino acid D) None of these
Answer: Answer is A, the amino acid which are part of protein are called standard amino acid.
7) Which of the following are aromatic amino acid?
A) Phenylalanine B) Tyrosine C) Tryptophan D) All of these
Answer: Answer is D, all of these amino acid contains ring in their structure.
8) Which of the following amino acid are basic or positively charged amino acid?
A) Lysine B) Arginine C) Histidine D) All of these
Answer: Answer is D, all of these amino acid carry positive charge.
9) The polymer of amino acid is called as—-.
A) Proteins B) Fatty acid C) Nucleotides D) Lipids
Answer: Answer is A, proteins are the polymer of amino acid.
10) Two amino acid joined to each other by ——- bond.
A) Glycosidic B) Peptide C) Hydrogen D) None of these
Answer: Answer is B, in proteins peptide bond is present.
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