MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
CBSE
Class 12 Biology
Molecular Basis Of Inheritance
Quiz 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Represser Lac-Operon protein attached to:
0%
Operator
0%
Inducer
0%
Regulator
0%
β-Glacto sidase
Explanation
Inducer
Following is important in Ïranscription:
0%
DNA Methylase
0%
CAAT Box
0%
Promotar
0%
DNA Polymerase
Explanation
DNA Methylase
Anticodon found in:
0%
On DNA
0%
On t-RNA
0%
On r-RNA
0%
On m-RNA
Explanation
On t-RNA
In DNA helix:
0%
Quadrate structure
0%
Polarity
0%
Antiparallel Polarity
0%
Disuiphide bond
Explanation
Antiparallel Polarity
During splicing axon attached and inducer enzyme for reaction:
0%
RNA Ligase
0%
RNA Catalase
0%
RNA permease
0%
RNA poloymerase
Explanation
RNA Catalase
During DNA synthesis formed segment is:
0%
Polymerase fragment
0%
RNA fragment
0%
Okazaki fragment
0%
RNA Primer
Explanation
Okazaki fragment
In a give DNA segment ATC ACC AGG ACC CCA ACA, the first base gets mutated. The effect of this on coding by the DNA segment will result in :
0%
One amino acid less in protein
0%
No change in the sequence
0%
Complete change in the type and sequence of amino acid
0%
Change in first amino acid only
Explanation
No change in the sequence
DNA fragments are joined in a correct sequence by :
0%
DNA ligase
0%
RNA polymerase
0%
Helicase
0%
DNA polymerase
Explanation
RNA polymerase
The ratio constant for a species is :
0%
T+C/G + A
0%
A+C/T + G
0%
G + G/A + T
0%
A + C/C + T
Explanation
A+C/T + G
DNA repairing is done by:
0%
By DNA polymerase I
0%
By DNA Polymerase II
0%
Both (a) and (b)
0%
By Ligase
Explanation
By DNA Polymerase II
A ribotide is made up of:
0%
Ribose + Phosphate + Uracil
0%
Deoxribose + Uracil + Phosphate
0%
Thymine + Ribose + Phosphate
0%
Deoxyribpse + Phosphate + Adenine
Explanation
Ribose + Phosphate + Uracil
the enzyme involved in transcription is:
0%
DNA Polymerase I
0%
DNA Polymerase II
0%
RNA Polymerase
0%
DNA Polymerase
Explanation
DNA Polymerase
Antiparallel strands of a DNA molecule means that:
0%
One strand turns clockwise
0%
One strand turns anticlockwise
0%
The phosphate groups at the start of two DNA strands are in opposite position
0%
The phosphate groups at the start of two DNA strands, at their ends, share the same position
Explanation
The phosphate groups at the start of two DNA strands are in opposite position
Which one is mainly transcribed:
0%
Only RNA sequence
0%
Middle repetitive DNA sequence
0%
Highly repetitive DNA sequence
0%
Single copy of DNA sequence
Explanation
Highly repetitive DNA sequence
Amino acid sequence, in protein synthesis is decided by the sequence of?
0%
c-DNA
0%
r-RNA
0%
f-RNA
0%
m-RNA
Explanation
r-RNA
DNA multiplication is also called:
0%
Replication
0%
Transduction
0%
Translation
0%
Transcription
Explanation
Transduction
During Protein synthesis, atone point the process comes to a halt. Select the group of the three codons from the following, from which any one of the three could bring about this halt:
0%
UUC, UUA, UAC
0%
UAG, UGA, UAA
0%
UUE, UCA, UCG
0%
UUU, UCC, UAU
Explanation
UAG, UGA, UAA
One turn of the helix in p-from DNA is approximately:
0%
20 Å
0%
2 nm
0%
20 nm
0%
34 nm
Explanation
34 nm
Which is not component of lac operon:
0%
Primer gene
0%
Promoter gene
0%
constructive gene
0%
Regulator gene
Explanation
constructive gene
Okazaki fregments is:
0%
RNA primer
0%
small segments of DNA on leading stand
0%
Small segments of DNA on lagging stand
0%
None of these
Explanation
Small segments of DNA on lagging stand
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
0
Answered
0
Not Answered
0
Not Visited
Correct : 0
Incorrect : 0
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page