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

Each tRNA has a sequence of three bases called anticodon which is complementary to codon of

Question # 2

The no of chromosome in mouse is

Question # 3

Chromosomal part which uncoils, during inter phase is called.

Question # 4

A strand of DNA, which is not transcribed is called as.

Question # 5

32P and 35S labeled viruses were used in his experiments by

Question # 6

Highly condensed portions of the chromatin are called.

Question # 7

Which one is non-directed orientation?

Question # 8

Genetic code for the amino acid methionine is.

Question # 9

All the 64 codons were tested by

Question # 10

Human cells contain types of tRNA molecules.

Question # 11

In prokaryote within promoter there are two binding sites TTGACA also called -35 sequence and TATAAT also called

Question # 12

In the double helix of DNA adenine forms two hydrogen bonds with

Question # 13

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

Question # 14

In 1953 Watson and Crick proposed structure of the

Question # 15

V-shaped chromosomes are called.

Question # 16

Chromosomes appear inside the nucleus at the time of.

Question # 17

Which one of the given is non sense codon.

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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 Pentose sugar in the molecule of DNA is
A. Ribose
B. Deoxyribose
C. Sucrose
D. Lactose
2 How many million nucleotides are in DNA of typical human chromosome
A. 140
B. 160
C. 180
D. 200
3 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
4 In 1944 Oswald Avery along with Colin Macleod and Maclyn McCarty repeated experiments of
A. Lamarck
B. Griffith
C. Darwin
D. Spemann
5 In the double helix of DNA adenine forms two hydrogen bonds with
A. Thymine
B. Guanine
C. Cytosine
D. Uracil
6 Which of the following is a 'start' codon
A. AUG
B. UAG
C. UAA
D. UGA
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 Genetic code is a combination of 3 nucleotides in DNA which specify a particular
A. Amino acid
B. Fatty acid
C. Vitamin
D. Steriod
9 RNA polymerase II synthesize.
A. mRNA
B. tRNA
C. rRNA
D. cDNA
10 No of chromosomes in Honey bee are.
A. 6
B.
20
C. 32
D. 40

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