Amino Acids Quiz | Amino Acids Objective Type Questions & Answers

Questions
21 Among the 20 standard proteins coding amino acids, which one is least occurs in proteins?
A Glycine
B Alanine
C Tryptophan
D Methionine

Answer: Tryptophan
22 Amino acids has
A both amino group and carboxyl group
B both amino group and keto group
C amino group only
D carboxyl group only

Answer: both amino group and carboxyl group
23 The simplest amino acid is
A Proline
B methionine
C glycine
D serine

Answer: Glycine
24 The first amino acid in a polypeptide chain is
A Serine
B Valine
C Alanine
D Methionine

Answer: Methionine
25 Which of the following is an α imino acid
A serene
B threonine
C valine
D proline

Answer: proline
26 Aromatic amino acids include
A Phenylalanine, tyrosine and tryptophan
B Phenylalanine, serine and tryptophan
C Threonine, tyrosine and tryptophan
D Asparagine, tyrosine and tryptophan

Answer: Phenylalanine, tyrosine and tryptophan
27 Positively charged basic amino acids are
A Lysine and arginine
B Lysine and asparagine
C Glutamine and arginine
D Lysine and glutamine

Answer: Lysine and arginine
28 Acidic amino acids include
A Arginine and glutamate
B Aspartate and asparagine
C Aspartate and lysine
D Aspartate and glutamate

Answer: Aspartate and glutamate
29 The 21st amino acid is
A hydroxy lysine
B hydroxyl proline
C selenocysteine
D citrulline

Answer: selenocysteine
30 A mutation has changed an isoleucine residue of a protein to Glutamic acid, which statement best describes its location in a hydrophilic exterior-
A On the surface since it is hydrophilic in nature
B In side the core of the protein since it is hydrophobic in nature
C Any where inside or outside
D Inside the core of protein since it has a polar but uncharged side chain

Answer: On the surface since it is hydrophilic in nature
31 Choose the incorrect statement out of the followings-
A Only L amino acids are found in the biological system
B Glycine is optical inactive
C Tyrosine is a modified amino acid
D Seleno cysteine is 21 st amino acid

Answer: Tyrosine is a modified amino acid
32 Choose a nano peptide out of the followings-
A Oxytocin
B Vasopressin
C Bradykinin
D All of the above

Answer: All of the above
33 Which out of the following amino acids is a precursor for a mediator of allergies and inflammation?
A Histidine
B Tyrosine
C Phenyl Alanine
D Tryptophan

Answer: Histidine
34 Mother of a mal nourished child has been instructed to include a complete protein in diet for her child, which out of the followings proteins should be recommended?
A Pulses
B Wheat
C Soy Protein
D Milk

Answer: Milk
35 All of the below mentioned amino acids can participate in hydrogen bonding except one
A Serine
B Cysteine
C Threonine
D Valine

Answer: Valine
36 Which out of the following amino acid is a precursor of niacin (Vitamin)?
A Tyrosine
B Threonine
C Tryptophan
D Phenylalanine

Answer: Tryptophan
37 Which of the following peptides is cyclic in nature-?
A Glutathione
B Gramicidin
C Met encephalin
D Leuencephalin

Answer: Gramicidin
38 Which of the following amino acid is a limiting amino acid in pulses?
A Leucine
B Lysine
C Methionine
D Glutamine

Answer: Methionine
39 Which out of the following is not a haemo protein ?
A Catalase
B Myeloperoxidase
C Glutathione peroxidase
D Aconitase

Answer: Aconitase
40 Choose the Anticancer peptide out of the followings-
A Bleomycin
B Methotrexate
C Cytosine Arabinoside
D Dideoxy Inosine

Answer: Bleomycin
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