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

Adenine and guanine are called

Question # 2

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

Question # 3

The no of chromosome in mouse is

Question # 4

Human cells contain types of tRNA molecules.

Question # 5

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

Question # 6

Each Okazaki fragment is synthesized by.

Question # 7

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

Question # 8

Amino acid attachment site of tRNA is.

Question # 9

Which of the following is a non sense codon.

Question # 10

Pentose sugar in the molecule of DNA is

Question # 11

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

Question # 12

Every gene starts with initiation codon AUG which encodes for the amino acid.

Question # 13

Anti codes present on

Question # 14

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

Question # 15

Which one is non-directed orientation?

Question # 16

Human cells have 46 chromosomes consisting of

Question # 17

A sequence of three nucleotides in mRNA is called.

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FSc Part II Biology Chapter 0 Important MCQ's

Sr.# Question Answer
1 Chromosomal theory of inheritance was first formulated by.
A. Karl Correns
B. T.H.Morgan
C. W. Sutton
D. Carvin Bridges
2 Human cells contain types of tRNA molecules.
A. 20
B. 45
C. 195
D. 300
3 DNA was discovered in
A. 1869
B. 1864
C. 1961
D. 1972
4 The particular array of chromosomes that an individual possesses called its.
A. Genotype
B. Phenotype
C. epistasis
D. Karvotype
5 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
6 Genetic code for the amino acid methionine is.
A. AUC
B. UGC
C. CGC
D. AUG
7 In 1953 Watson and Crick proposed structure of the
A. RNA molecule
B. ATP molecule
C. DNA molecule
D. NAD molecule
8 A gene with initiation codon, which encodes the amino acid methionine is.
A. UAA
B. UAG
C. AUG
D. UGG
9 32P and 35S labeled viruses were used in his experiments by
A. Watson & Crick
B. Hershey & Chase
C. Wilkins & Franklin
D. Correns & Bridge
10 In 1953, F . Sanger described the sequence of amino acids of.
A. Myoglobin
B. Insulin
C. Keratin
D. Globulin

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