If the initial number of template DNA molecules in a PCR reaction is 1000, the number of product DNA molecules at the end of 20 cycles will be closest to 

(A)  10³ 

(B)  10⁶ 

(C) 10⁹ 

(D)  10¹² 

The decay profiles of three radioactive species A, B and C are given below :

These profiles imply that the decay constants k_A, k_B and k_C follow the order

(A) k_A > k_B > k_C (B) k_A > k_C > k_B (C) k_B > k_A > k_C (D) k_C > k_B > k_A

Which one of the following is the smallest in size ?

(A) Bacteria 

(B) Mitochondrion 

(C) Mammalian cell 

(D) Virus

Which one of the following statements is incorrect about nucleosomes?

(a) They contain DNA

(b) They contain histones

(c) They are membrane-bound organelle

(d) They are a part of chromosomes

The number of net ATP molecules produced from 1 glucose molecule during glycolysis is

(A)  1

(B)  2 

(C)  3 

(D)  4

Which one of the following compounds is generally translocated in the phloem?

(a) Sucrose

(b) D-glucose

(c) D-mannose

(d) D-fructose

Which one of the following generally acts as an antagonist to gibberellins? 

(a) Zeatin 

(b) Ethylene 

(c) ABA 

(d) IAA

Which one of the following organs is NOT a site for the production of white blood cells?

(a) Bone marrow

(b) Kidney

(c) Liver

(d) Spleen

Which ONE of the following options is TRUE with respect to Emigration ?

(A)  It is the difference between the births and deaths in a population.

(B)  It is the difference between individuals who have come to a habitat and who have left the habitat.

(C)  It involves individuals of different species coming to a habitat from elsewhere during the period under consideration

(D)  It involves individuals of a population leaving a habitat during the time period under consideration

Match the human disorders shown in Group I with the biochemical processes in Group II. Choose the correct combination

 (A)   P-ii, Q-i, R-iv, S-v 

(B)   P-i, Q-iv, R-ii, S-v 

(C)   P-ii, Q-i, R-v, S-iii 

(D)  P-v, Q-iii, R-i, S-ii