Second Year Biology Chapter 20 Online MCQ Test for 2nd Year Biology Chapter 20 Chromosomes and DNA Preparation

FSC Part 2 Biology
Chapter 20 Test

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Biology FSC Part 2 Chapter 20 Online MCQ's Test

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Question # 1

The stand which elongates towards the replication fork is.

Question # 2

No of chromosomes in Honey bee are.

Question # 3

Which of the following is a 'start' codon

Question # 4

Which one of the given is non sense codon.

Question # 5

How many million nucleotides are in DNA of typical human chromosome

Question # 6

A central role for chromosomes in heredity was first suggested in 1900 by.

Question # 7

Repeating units of DNA are called.

Question # 8

Human cells contain types of tRNA molecules.

Question # 9

Genetic code is a combination of 3 nucleotides in DNA which specify a particular

Question # 10

A combination of three nucleotides of DNA that specifies as amio acid is called.

Question # 11

Advantage of pecking orders is to:

Question # 12

Which one is non-directed orientation?

Question # 13

The genetic code for glycine is.

Question # 14

DNA changes are called mutations and the organisms that have undergone such changes are called

Question # 15

Every 200 nucleotides the DNA duplex is coiled around a core of eight histone proteins forming a complex known as a

Question # 16

In 1944 Oswald Avery along with Colin Macleod and Maclyn McCarty repeated experiments of

Question # 17

The number of nucleotides in the DNA of a typical human chromosome is about

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FSC Part 2 Biology Chapter 20 Online Test MCQ's

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FSc Part II Biology Chapter 0 Important MCQ's

Sr.# Question Answer
1 In 1953 Watson and Crick proposed structure of the
A. RNA molecule
B. ATP molecule
C. DNA molecule
D. NAD molecule
2 Chromosomal theory of inheritance was first formulated by.
A. Karl Correns
B. T.H.Morgan
C. W. Sutton
D. Carvin Bridges
3 Okazaki fragments are about 1000 - 2000 nucleotides long in
A. Prokaryotes
B. Eukaryotes
C. Both a & b
D. None of these
4 Which of the following is a non sense codon.
A. UGA
B. UGG
C. AUG
D. AUC
5 Transfer of genetic material from one cell to other that can alter the genetic make up of recipient cell is called.
A. Transcription
B. Replication
C. Translation
D. Transformation
6 Highly condensed portions of the chromatin are called.
A. Homochromatin
B. Heterochromatin
C. Euchromatin
D. Achromatin
7 Each tRNA has a sequence of three bases called anticodon which is complementary to codon of
A. rRNA
B. tRNA
C. mRNA
D. snRNA
8 Walter Fleming first discovered chromosomes in the dividing cells of.
A. Frog larvae
B. Sea urchin larvae
C. Insect larvae
D. Salamander larvae
9 The genetic code for glycine is.
A. UAG
B. GAU
C. GUA
D. GGU
10 Chromosomal part which uncoils, during inter phase is called.
A. Chromatids
B. Satellite DNA
C. Euchromatin
D. Heterochromatin

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