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Free Download as PDF of the detailed solutions for class 12 Biology from NCERT or CBSE text book as per exam pattern, to help you in day to day learning. We provide all important questions and answers from chapter Molecular Basis of Inheritance of Biology.
(16)
The transcription of any gene is the indication of its
[1]
Induction
[2]
Activity
[3]
Stimulation
[4]
Hypersensitivity
(17)
Which one of the following is not a part of a transcription unit in DNA?
[1]
A promoter
[2]
The structural gene
[3]
The inducer
[4]
A terminator
(18)
Removal of introns and joining the exons in a defined order in a transcription unit is called
[1]
Capping
[2]
Splicing
[3]
Tailing
[4]
Transformation
(19)
During protein synthesis, AUG functions as the initiator codon in mRNA. What should be the anticodon on the tRNA molecule that picks up and brings the amino acid specified by this codon?
[1]
TAC
[2]
UAC
[3]
GUA
[4]
CAU
(20)
The one aspect which is not a salient feature of genetic code, is its being
[1]
Specific
[2]
Degenerate
[3]
Universal
[4]
Ambiguous
21
Signaling between cells usually results in the activation of protein
[1]
Lipases
[2]
Kinases
[3]
Proteases
[4]
Nucleases
22
There are ______ subunits that make up a nucleotide?
[1]
One
[2]
One
[3]
Three
[4]
Four
23
There is no DNA in
[1]
Hair root
[2]
An enucleated ovum
[3]
Mature RBCs
[4]
A mature spermatozoan
24
A single strand of nucleic acid tagged with a radioactive molecule is called
[1]
Plasmid
[2]
Probe
[3]
Vector
[4]
Selectable marker
25
Which one of the following pairs is correctly matched with regard to the codon and the amino acid coded by it?
[1]
AAA-Lysine
[2]
AUG-Cysteine
[3]
CCC-Alanine
[4]
UUA-Valine
26
A phenomenon where the third base of t-RNA at its 5’ end can pair with a non-complementary base of m-RNA is called
[1]
Degeneracy
[2]
Wobbling
[3]
Universality
[4]
Collinearity
27
The primary control of gene expression takes place at the level of
[1]
Translation
[2]
Transcription
[3]
DNA-replication
[4]
None of the above
28
If one strand of DNA has the nitrogenous base sequence as ATCTG, what would be the complementary RNA strand sequence?
[1]
AACTG
[2]
ATCGU
[3]
TTAGU
[4]
UAGAC
29
Satellite DNA is useful tool in
[1]
Genetic engineering
[2]
Organ transplantation
[3]
Sex determination
[4]
Forensic science
30
DNA or RNA segment tagged with a radioactive molecule is called
[1]
Plasmid
[2]
Vector
[3]
Probe
[4]
Clone
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