Which of the following RNA polymerase catalyses the formation of transfer RNA in eukaryotes?

(a) RNA polymerase I                         (b) RNA polymerase II

(c) RNA polymerase I and II               (d) RNA polymerase III

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

Difficulty Level:


Out of 64 codons how many of them code for amino acids?

(a) 64                             (b) 20                             (c) 61                             (d) 32

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

Difficulty Level:


Circular DNA is found in:
(a) Viruses
(b) Bacteria, chloroplast and mitochondria
(c) Chloroplast and mitochondria alone
(d) All of these

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

Difficulty Level:


If in a DNA molecule cytosine is 18%, the percentage of adenine would be:

(a) 18%                (b) 32%                (c) 36%                (d) 64%

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

Difficulty Level:


Isotopes used in proving semiconservative replication of DNA were:

(a) 14N 14C             (b) 14N 15N             (c) 14N 31P              (d) 14C 31P

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

Difficulty Level:


Bacterial nucleoid has:

(a) One single-stranded DNA             (b) One double-stranded DNA

(c) Two single-stranded DNA              (d) Many double-stranded DNAs

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

Difficulty Level:


Imagine an error occurring during DNA replication in a cell, so that where there is supposed to be a T in one of the genes there is instead a G. What effect will this probably have on the cell?
(a) The amino acid sequence of one of its kinds of proteins will be completely changed
(b) An amino acid will be missing from each of its kinds of proteins
(c) One of its kinds of proteins might contain an incorrect amino acid
(d) An amino acid will be missing from one of its kinds of proteins.

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

Difficulty Level:


A sequence of pictures of polypeptide synthesis shows a ribosome holding two transfer RNAs. One tRNA has a polypeptide chain attached to it; the other tRNA has a single amino acid attached to it. What does the next picture show?
(a) The polypeptide chain moves over and bonds to the single amino acid
(b) The tRNA with the amino acid leaves the ribosome
(c) The amino acid moves over and bonds to the polypeptide chain
(d) The tRNA with the polypeptide chain leaves the ribosome

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

Difficulty Level:


Column-I                                               Column-II
I. Genome of ϕ 174 bacteriophage           (A) Ribozyme, RNAase
II. Purine                                               (B) 5386 Nucleotides
III. Catalytic RNA                                   (C) Adenine and Guanine
IV. Any chemical change in DNA              (D) Mutation
The correct match is:
(a) I - D, II - B, III - A, IV - C                 (b) I - B, II - A, III - D, IV - C
(c) I - D, II - C, III - A, IV - B                 (d) I - B, II - C, III - A, IV - D

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

Difficulty Level:


Column-I                                        Column-II
I. Operator site                               (A) Binding site for RNA polymerase
II. Promoter site                             (B) Binding site for repressor molecule
III. Structural gene                         (C) Codes for enzyme protein
IV. Regulator gene                          (D) Code for repressor molecules
The correct match is:
(a) I - B, II - A, III - C, IV - D          (b) I - B, II - A, III - D, IV - C
(c) I - D, II - C, III - A, IV - B          (d) I - B, II - C, III - A, IV - D

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

Difficulty Level: