Kcet

Identify the incorrect statement from the following. 

(1) Response of T-cells is called cell mediated immunity 

(2) B-cells produce antibody 

(3) Macrophages are the phagocytic cells 

(4) Interferons kill viruses

The number of oxygen atoms in 4.4 gm of CO₂ is, 

(1) 6 x 10²² 

(2) 12 x 10²³ 

(3) 1.2 x 10²³ 

(4) 6 x 10²³ 

Two dice are thrown simultaneously, the probability of obtaining a total score of 5 is

(1) 1/12

(2) 1/6

(3) 1/18

(4) 1/9

What is the role of competitive inhibitor during enzyme action? 

(1) It alters the active site of the enzyme and prevents the binding of substrate 

(2) It enhances enzyme action 

(3) It inhibits breaking of chemical bonds of the substrate 

(4) It declines the enzyme action

The value of tan π/8 is equal to 

(1) √2 + 1

(2) 1-√2

(3) 1/2

(4) 1/√2+1

Digestion of proteins is incomplete in the absence of enterokinase, because 

(1) Trypsinogen is not converted into trypsin 

(2) Pepsinogen is not converted into pepsin 

(3) Prorennin is not converted into rennin 

(4) Chymotrypsinogen is not converted into chymotrypsin

The property which is not true about Fluorine is, 

(1) It forms only one oxo acid 

(2) High F-F bond dissociation enthalpy 

(3) Most of its reactions are exothermic 

(4) Highest electronegativity 

Three projectiles A, B and C are projected at an angle of 30°, 45°, 60° respectively. If RA, RB and RC are ranges of A, B and C respectively, then (velocity of projection is same for A, B and C) 

(1) R_A = R_C > R_B 

(2) R_A = R_C < R_B 

(3) R_A = R_B = R_C 

(4) R_A < R_B < R_C

A person who has allergy, the type of antibody produced in his body is 

(1) IgE 

(2) IgA 

(3) 1gM 

(4) IgG

Find the sequence of binding of the following aminoacyl t-RNA complexes during translation to m-RNA transcribed by a DNA segment having the base sequences 3’TACATGGGTCCG5′.

Choose the answer showing the correct order of alphabets. 

(1) C, D, B, A 

(2) A, B, D, C 

(3) D, C, A, B 

(4) B, A, D, C