81.

82.

83.

84.

85.

86.

87.

88.

89.

90.

91.

The specific site of action of trypsin is :

(^) Peptide bond formed by Carboxyl groups of basic amino acids.

(B) Peptide bond formed by Carboxyl groups of aromatic amino acids.
(C) Peptide bond formed by Carboxyl groups of hydrophobic amino acids.
(D) Peptide bond formed by Carboxyl groups of acidic amino acids.

Soret band is observed at :

(^) 300nm (B) 500nm (C) 600nm (D) 400nm
Enzyme defect in acute intermittent porphyria :

(A) Heme synthase ൯) PBG deaminase

(C) ALA synthase (D) Coproporphyrinogen oxidase

Which among the following enzymes is an indicator of vitamin B, deficiency ?
(A) Erythrocyte transketolase

(B) Erythrocyte glutathione reductase

(C) Erythrocyte glutathione peroxidase

(D) Erythrocyte lactate dehydrogenase

Which among the following is true for competitive enzyme inhibition ?
(^) K,, is constant, V,,,, decreases

(B) decreases, भ 0५ is constant

(00 ‏ےکا‎ increases, ۲, decreases

(2) ‏ہکا‎ increases, "ചം is constant

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The De Ritis ratio > 2 is seen in :

(A) Obstructive jaundice (B) Toxin induced hepatitis

(C) Alcoholic hepatitis (D) Acute viral hepatitis

The isoenzyme of alkaline phosphatase that is heat stable is found in :

(^) Liver (B) Intestine (C) Bone (D) Placenta
Low TSH levels with low radioactive iodine uptake is characteristic of :

(^) Graves’ disease (B) Hashimoto's disease

(C) Toxic nodular goitre (D) Postpartum thyroiditis

Which of the following is not true about Taq polymerase used in PCR ?

(^) 3-5 polymerase activity (B) 5-3 polymerase activity

(0) Thermostable (D) 5-8 exonuclease activity

Genetic code is all except :

(^) Degenerate (B) Non-universal (C) Triplet (D) Unambiguous

About plasmids all are true except :

(A) Used as vectors for recombinant DNA technology
(B) They are outside bacterial chromosomes

(C) Carry antibiotic resistance genes

(D) They replicate with bacterial DNA replication

18 007/2022
{P.T.0.}