Molecular Basis of Inheritance: MCQs Quiz – 5 7


It's only fair to share...Share on Facebook
Facebook
Tweet about this on Twitter
Twitter
Email this to someone
email
Pin on Pinterest
Pinterest
Share on Tumblr
Tumblr

Questions on Molecular Basis of Inheritances: Solve online MCQs test on ‘Molecular basis of Inheritance‘ with instant answers and reporting. Test # 05

Molecular Basis of Inheritance: MCQs Quiz - 5

Congratulations - you have completed Molecular Basis of Inheritance: MCQs Quiz - 5. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%
Your answers are highlighted below.
Question 1
All the terminator codons begin with the nucleotide of
A
Adenine
B
Uracil
C
Guanine
D
Cytosine
Question 2
In the synthesis of which of the following, the DNA molecule is not directly involved?
A
mRNA molecule
B
protein molecule
C
another DNA molecule
D
tRNA molecule
Question 3
What does "lac" refer to in what we call the lac operon?
A
Lactose
B
Lactase
C
Lac insect
D
The number 1,00,000
Question 4
The transcription of any gene is the indication of its
A
Induction
B
Activity
C
Stimulation
D
Hypersensitivity
Question 5
Signaling between cells usually results in the activation of protein
A
Lipases
B
Kinases
C
Proteases
D
Nucleases
Question 6
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
A
Degeneracy
B
Wobbling
C
Universality
D
Collinearity
Question 7
During translation initiation in prokaryotes, a GTP molecule is needed in
A
association of 30S, mRNA with formyl-met-t RNA
B
association of 50S subunit of ribosome with initiation complex
C
formation of formyl-met-tRNA
D
binding of 30 subunit of ribosome with mRNA
Question 8
Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a ‘‘triplet’’?
A
Beadle and Tatum
B
Nirenberg and Matthaei
C
Hershey and Chase
D
Morgan and Sturtevant
Question 9
Molecular basis of organ differentiation depends on the modulation in transcription by
A
Anticodon
B
RNA polymerase
C
Ribosome
D
Transcription factor
Question 10
The sequence of structural gene in lac operon concept is
A
lac Y, lac Z, lac A
B
lac Z, lac Y, lac A
C
lac A, lac Y, lac Z
D
lac A, lac Z, lac Y
Question 11
The sequence of nitrogen bases in a particular region of the noncoding strand of a DNA molecule was found to be CAT GTT TAT CGC. What would be the sequence of nitrogen bases in the mRNA that is synthesized by the corresponding region of the coding strand in that DNA?
A
GUA CAA AUA GCC
B
GTA CAA ATA GCC
C
CAU GUU UAU CGG
D
CAA GAA TAU GCC
Question 12
Protein synthesis in an animal cell occurs
A
On ribosomes presents in cytoplasm as well as in mitochondria
B
On ribosomes present in the nucleolus as well as in cytoplasm
C
Only on ribosomes attached to the nuclear envelope and endoplasmic reticulum
D
Only on the ribosomes present in cytosol
Question 13
E. coli cells with a mutated z gene of the lac operon cannot grow in medium containing only lactose as the source of energy because
A
They cannot synthesize functional beta galactosidase
B
They cannot transport lactose from the medium into the cell
C
The lac operon is constitutively active in these cells
D
In the presence of glucose, E. coli cells do not utilize lactose
Question 14
Production of a human protein in bacteria by genetic engineering is possible because
A
Bacterial cell can carry out the RNA splicing reactions
B
The mechanism of gene regulation is identical in humans and bacteria
C
The human chromosome can replicate in bacterial cell
D
The genetic code is universal
Question 15

Assertion:  Replication  and  transcription  occur  in  the  nucleus  but  translation  occurs  in  the cytoplasm.

Reason: mRNA is transferred from the nucleus into the cytoplasm where ribosomes and amino acids are available for protein synthesis.

A
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
C
Assertion is true statement but Reason is false.
D
Both Assertion and Reason are false statements.
Once you are finished, click the button below. Any items you have not completed will be marked incorrect. Get Results
There are 15 questions to complete.

Rate the test as per its difficulty level and post your comments at the end of the test.


Leave a comment

Your email address will not be published. Required fields are marked *

7 thoughts on “Molecular Basis of Inheritance: MCQs Quiz – 5

  • ram

    xcellent….sir we need more previous year mcq’s which came in cbse pmt,aiims,bhu,cpmt,etc

  • Harshita sahu

    in ques.11 last codon of the first optn needs to be corrected as GCG.

  • somdatta ganguly

    in question 11 either the last codon of d ques needs 2 b corctd or else d last codon of d ans needs to b rectified.. kindly check it make it corct… d ques r othrwise realy beneficial:)

    • Sanyam

      the ans is right…..instead of thamine uracil comes n uracil pairs with adenine…so the 1st option is correct..

  • Anjana.S.Rajan

    good,informative and tooooooooooo helpful 4 exams.hats of to those people who have made this

  • pushpesh

    in ques. no. 11 the not a single option is correct as the correct sequence of the first option will be GUA CAA AUA GCG “PLEASE CHECK THE SEQUENCE OF LAST CODON”.