(a) From both ends of chromosome
simultaneously
(b) Several sites along DNA of a
chromosome simulatneously
(c) From one end of chromosome to the
other
(d) From centromere to either end
- Which of the following statements is
correct?
i. The biochemical nature of genetic
material was not defined from the
experiments conducted by Griffith.
ii. Working on transformation Avery et al
concluded DNA is genetic material but
not all biologists were convinced.
iii. RNA is the genetic material in TMv,
QB bacteriophage etc.
iv. DNA is the predominant genetic
material while RNA performs dynamic
functions of messenger and adapter.
v. Viruses having DNA genome and
having shorter life span mutate and
evolve faster.
(a) iii and iv (b) All except v
(c) i and ii (d) All - DNA segment, 3’ TAC ATG GCT CCG
5’, transcribes one mRNA. Four tRNAs
with anticodons
i. AUG ii. UAC
iii. CCG and
iv. GCU are required for translation. What
is the order of tRNAs ....
(a) i, ii, iv, iii (b) ii, i, iv, iii
(c) i, ii, iii, iv (d) ii, i, iii, iv - Select the correct statements-
i. In eukaryotes, RNA pol III catalyes the
synthesis of 5SrRNA, tRNA and SnRNA
ii. DNA generally acts as a template for
the synthesis of DNA and RNA
iii. During protein synthesis, amino acid
gets attached to tRNA with the help
of aminoacyl synthetase, ATP is also
used.
iv. The first amino acid in any
polypeptide chain of prokaryote is
always formylated methionine but in
eukaryotes it is methionine.
v. A single anticodon can recognize more
than one codon of m-RNA. Thus
phenomenon is termed as Wobble
hypothesis.
(a) ii and iii are correct
(b) i and ii are correct
(c) iv and v are correct
(d) All are correct- Strand of DNA that functions as template
for mRNA transcription is.
i. Coding strand
ii. Non-coding strand
iii. Sense strand
iv. Antisense strand the correct answer is ..
(a) i and iii (b) ii and iii
(c) ii and i (d) ii and iv - What is added to the 3’-end of many
eukaryots t-RNAs during post
transcriptional processing?
(a) Amino acid
(b) Trinucleotide CCA
(c) 7 methyl GTP
(d) Poly ‘A’ tail - The ratio between purines and pyrimidines
in the starting codon
(a) 2:1 (b) 1:1 (c) 1:2 (d) 3:1 - Select the Correct statement ...
i. RNA polymerase I transcribesrRNA
ii. RNA polymerase II transcribes snRNA
iii. RNA polymerase III transcribes
hnRNA
iv. RNA polymerase II transcribes hnRNA
(a) i and iv are correct
(b) ii and iii are correct
(c) i and ii are correct
(d) i, ii and iv are correct - Part of DNA Polymerase I-enzyme after
removal of 5’----3’ Exonuclease activity
exhibiting structural domain is called
(a) Okazaki fragment
(b) Template Strand
(c) Klenow fragment
(d) Replication bubble