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

Pentose sugar in the molecule of DNA is

Question # 2

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

Question # 3

Genetic code for the amino acid methionine is.

Question # 4

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

Question # 5

Which one of the following is initiation codon.

Question # 6

In 1953 Watson and Crick proposed structure of the

Question # 7

Human cells contain types of tRNA molecules.

Question # 8

Highly condensed portions of the chromatin are called.

Question # 9

The particular array of chromosomes that an individual possesses called its.

Question # 10

Which one is non-directed orientation?

Question # 11

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

Question # 12

A chromosome with equal length of its arms.

Question # 13

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

Question # 14

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

Question # 15

Okazaki fragments are about 1000 - 2000 nucleotides long in

Question # 16

Repeating units of DNA are called.

Question # 17

In 1882, chromosomes were first observed by.

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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 The copping of mRNA from DNA is called.
A. Translation
B. Transduction
C. Transcription
D. Transformation
2 Every 200 nucleotides the DNA duplex is coiled around a core of eight histone proteins forming a complex known as a
A. Histomone
B. Nucleosome
C. Peroxisome
D. Glyoxisome
3 Every gene starts with initiation codon AUG which encodes for the amino acid.
A. Lysine
B. Serine
C. Proline
D. Methionine
4 A sequence of three nucleotides in mRNA is called.
A. Cistron
B. Codon
C. Anticodon
D. Templet
5 The number of chromosomes in frog is
A. 52
B. 26
C. 13
D. 7
6 The particular array of chromosomes that an individual possesses called its.
A. Genotype
B. Phenotype
C. epistasis
D. Karvotype
7 Advantage of pecking orders is to:
A. Avoids injury to the strong animals
B. Protect territory
C. Find suitable mate
D. Assign specific role to individual subordinates
8 The no of chromosome in mouse is
A. 6
B. 32
C. 26
D. 40
9 Which of the following is a non sense codon.
A. UGA
B. UGG
C. AUG
D. AUC
10 Each tRNA has a sequence of three bases called anticodon which is complementary to codon of
A. rRNA
B. tRNA
C. mRNA
D. snRNA

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