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Free download in PDF Amino Acids Objective Type Questions & Answers for competitive exams. These short objective type questions with answers are very important for competitive exams like IIT-JEE, NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries.
(21)
Among the 20 standard proteins coding amino acids, which one is least occurs in proteins?
[A]
Glycine
[B]
Alanine
[C]
Tryptophan
[D]
Methionine
(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
(24)
The first amino acid in a polypeptide chain is
[A]
Serine
[B]
Valine
[C]
Alanine
[D]
Methionine
(25)
Which of the following is an α imino acid
[A]
serene
[B]
threonine
[C]
valine
[D]
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
(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
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
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
35
All of the below mentioned amino acids can participate in hydrogen bonding except one
[A]
Serine
[B]
Cysteine
[C]
Threonine
[D]
Valine
36
Which out of the following amino acid is a precursor of niacin (Vitamin)?
[A]
Tyrosine
[B]
Threonine
[C]
Tryptophan
[D]
Phenylalanine
37
Which of the following peptides is cyclic in nature-?
[A]
Glutathione
[B]
Gramicidin
[C]
Met encephalin
[D]
Leuencephalin
38
Which of the following amino acid is a limiting amino acid in pulses?
[A]
Leucine
[B]
Lysine
[C]
Methionine
[D]
Glutamine
39
Which out of the following is not a haemo protein ?
[A]
Catalase
[B]
Myeloperoxidase
[C]
Glutathione peroxidase
[D]
Aconitase
40
Choose the Anticancer peptide out of the followings-
[A]
Bleomycin
[B]
Methotrexate
[C]
Cytosine Arabinoside
[D]
Dideoxy Inosine
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