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Published on: 26/08/2022
QB365 provides a detailed and simple solution for every Possible Creative Questions in Class 12 Biology Subject - Zoology - Molecular Genetics, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
Download Tamil Nadu 12th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Biology Test1.
The term ___________ refers to DNA of Prokaryotes.
Nuclein
Ribozyme
Genophore
Nucleosome
2.
The distance between two consecutive base pairs in DNA is_________.
3.4 nm
0.34 nm
34.0 nm
31 x 10-9
3.
The concept of RNA world was independently proposed by __________
Orgel, Brick and Carl woese
Brick, Griffith and Crick
Wilkins and Franklin
Walter Gilbert
4.
_______demonstrated that RNA is the genetic material in RNA containing viruses.
Avery
Conrat and Singer
Griffith
Watson and Crick
5.
_______is unique for DNA.
Adenine
Uracil
Guanine
Thymine
6.
One difference between deoxyribose and Ribose is due to________.
One Oxygen atom more in Ribose
Two Oxygen atoms less in Deoxyribose
Two Carbon atoms less in Ribose
Four Carbon atoms more in Ribose
7.
___________ used radioactive labelled molecules to prove that DNA is the genetic material.
Hershey and Chase
Wilkins and Franklin
Griffith
Mcleod and Avery
8.
Human Genome was sequenced in ________.
1979
2015
1989
2001
9.
The experiment conducted by Griffith was based on_________.
Transduction
Replication
Transformation
Conjucation
10.
Griffith's experiments proved that _________.
RNA is involved in protein synthesis
Bacteria undergoes asexual reproduction
DNA is the genetic material
DNA is made of two strands
11.
The term nucleic acid was coined by ________.
Miescher
Hofmeister
Altman
Mcleod
12.
Chromosomes were first observed by ________.
Miescher
Hofmeister
Avery
Griffith
13.
One gene one enzyme hypothesis was proposed by Beadle and Tatum based on ________
Yeast
Drosophila
E. coli
Neurospora
14.
The classical concept of a gene was given by _______.
Mendel
Sutton
Johannsen
Hofmeister
15.
The term gene was coined by ________
Mendel
Lyon
Johannsen
Hershey
1.
(c)
Genophore
2.
(b)
0.34 nm
3.
(a)
Orgel, Brick and Carl woese
4.
(b)
Conrat and Singer
5.
(a)
Adenine
6.
(a)
One Oxygen atom more in Ribose
7.
(a)
Hershey and Chase
8.
(d)
2001
9.
(c)
Transformation
10.
(c)
DNA is the genetic material
11.
(c)
Altman
12.
(b)
Hofmeister
13.
(d)
Neurospora
14.
(b)
Sutton
15.
(c)
Johannsen
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