iv. Bases on free nucleotides bond with
bases on DNA strands.
Which of the following shows the correct
sequence?
(a) i, iv, ii, iii (b) i, ii, iii, iv
(c) iv, ii, iii, i (d) i, ii, iv, iii
- cDNA is copied from mRNA molecule
with the help of
(a) Restriction enzyme
(b) Reverse transcriptase
(c) DNA polymerase
(d) Adenosine deaminose - The number of punctuation codon in a
genetic code are
(a) 2+3=5 (b) 1+3=4
(c) 1+1=2 (d) 3 - Match the following:
A. t-RNA 1. linking of amino-acids
B. m-RNA 2. Transfer og genetic
information
C. r-RNA 3. Nucleolar organising
region
D. Peptidyl 4. Transfer of amino acid
from transferase
cytoplasm of
ribosome
(a) A-4, B-2, C-3, D-1
(b) A-1, B-4, C-3, D-2
(c) A-1, B-2, C-3, D-4
(d) A-1, B-3, C-2, D-4 - DNA polymerisation rate of DNA
polymerase and estimated number of gene
in Human being respectively?
(a) 25000 and
(b) 2000 bp/sec and 25000
(c) 3000 and 5386
(d) - In a 3.2 Kbp long piece of DNA, 820
adenine bases were found. What would be
the number of cytosine bases?
(a) 1560 (b)780 (c) 1480 (d)740 - If 100 heavy DNA 15N are replicated
there times in medium , the result obtained
is
(a) 12.5% intermediate and 87.5% light
DNA
(b) 25% intermediate and 75% light DNA
(c) 50% heavy and 50% light DNA
(d) 37.5% half heavy and 62.5 heavy DNA- Read the following statements and choose
the correct option.
i. RNA polymerase associates transiently
with ‘Rho’ factor to initiate transcription.
ii. In bacteria, transcription and translation
takes place in the same compartment.
iii. RNA polymerase I is responsible for
transcription of tRNA.
iv. When hnRNA undergoes capping
process, adenylate residues are added
at 3’ end in a template independent
manner.
v. hnRNA is the precurse of mRNA.
(a) i and iv are correct
(b) iii and iv are correct
(c) ii, iii and v are correct
(d) ii and v are correct - In the carbon skeleton of the pentose sugar in
DNA, what is the attachment point of a base
to from a nucleoside?
(a) C 2 (b) C 4 (c) C 1 (d) C 3 - DNAis very long in relation to its diameter.
If a strand of DNA is 0.1 mm in length,
what is the ratio of length to diameter,or
the axial ratio?
(a) 50,000 (b) 5,000
(c) 10,000 (d) 1,00,000 - If the DNA of humans contains bp,
and if an Okazaki fragment, on average,is
2000 bp long, how many initiation points
for RNA primase are present in the
genome?
(a)^ (b)
(c) (d) - Suppose evolution on earth had occurred
in such a way that there are 96 amino acids
instead of 20. DNA has 12 different types
of bases and DNA synthesis occurs in the
same way as today. The minimum number
of bases per DNA codon would be
(a) 12 (b)8 (c) 2 (d)3