In a bacterium, the amount of adenine was found to be 18 per cent. Suggest the cytosine base composition from the following

(1) 64%

(2) 36%

(3) 32%

(4) 18%

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


In which of the following combinations, the compounds in ascending order based on their molecular weights are arranged?

(a) DNA, RNA, AMP, ADP, ATP

(b) DNA, RNA, ATP, ADP, AMP

(c) AMP, ADP, ATP, RNA, DNA

(d) AMP, ATP, ADP, DNA, RNA

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


If a segment of an mRNA molecule has the sequence 5’ GUACCGAUCG 3’, which of the following could have been the template DNA molecule?

(1) 3’ GCUAGCCAUG 5’

(2) 3’ GUACCGAUCG 5’

(3) 3’ CATGGCTAGC 5’

(4) 3’ CGATCGGTAC 5’

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


This method of finding a gene is used when researchers know very little about the gene they are trying to find. This process results in a complete gene library: a collection of copies of DNA fragments that represent the entire genome of an organism.

(1) Cloning

(2) Shotgun cloning

(3) Gene synthesis cloning

(4) PCR

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


In prokaryotes, the process of replication is catalysed by the following enzymes. Identify which of the enzymes is best coordinate with the role.

(1) Helicase

 –

Joins the ends of DNA segments

(2) DNA polymerase-I

 –

Synthesises DNA

(3) DNA polymerase-II

 –

Erases primer and fills gaps

(4) Primase

 –

Synthesises RNA primers

 

Concept Questions :-

DNA Replication: II
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


hn-RNA undergoes two additional processing. Out of which, in one of them an unusual nucleotide (methyl guanosine triphosphate) is added to the 5’-end of hnRNA. This is known as

(1) capping

(2) tailing

(3) splicing

(4) termination

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


James Watson and Francis Crick got Nobel prize in the year

(1) 1960

(2) 1962

(3) 1959

(4) 1953

Concept Questions :-

DNA Double Helix
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Which of the following is a genetic material?
(A)Dideoxyribo nucleic acid
(B)Deoxyribo nucleic acid
(C)Deoxyribulose nucleic acid
(D)Deoxyribosome nucleic acid

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Polymerisation of which of the following produces Nucleic acids?
(A)Nucleosides
(B)Nucleotides
(C)DNA and RNA
(D)Both A and B

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Which of the following is a genetic material in most of the organisms?
(A)DNA
(B)RNA
(C)Both DNA and RNA
(D)Nucleic Acid

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level: