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

Which one of the following is initiation codon.

Question # 2

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

Question # 3

In 1953 Watson and Crick proposed structure of the

Question # 4

A chromosome with equal length of its arms.

Question # 5

Genetic code for the amino acid methionine is.

Question # 6

In 1882, chromosomes were first observed by.

Question # 7

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

Question # 8

Amino acid attachment site of tRNA is.

Question # 9

Unlike most proteins, histones are.

Question # 10

How many million nucleotides are in DNA of typical human chromosome

Question # 11

A gene with initiation codon, which encodes the amino acid methionine is.

Question # 12

Adenine and guanine are called

Question # 13

Anti codes present on

Question # 14

In 1953, F . Sanger described the sequence of amino acids of.

Question # 15

Transfer of genetic material from one cell to other that can alter the genetic make up of recipient cell is called.

Question # 16

DNA was discovered in

Question # 17

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

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FSc Part II Biology Chapter 0 Important MCQ's

Sr.# Question Answer
1 DNA was discovered in
A. 1869
B. 1864
C. 1961
D. 1972
2 Which one is non-directed orientation?
A. Taxis
B. Kinesis
C. Tropism
D. Imprinting
3 Genetic code is a combination of 3 nucleotides in DNA which specify a particular
A. Amino acid
B. Fatty acid
C. Vitamin
D. Steriod
4 In sickle cell anemia code for glutamic acid is replaced by.
A. Leucine
B. Valine
C. Proline
D. Histidine
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 Unlike most proteins, histones are.
A. Positively charges
B. Neutral
C. discharged
D. Negatively charged
7 Innate behavior is all but;
A. Heritable
B. Intrinsic
C. Sterotypic
D. Flexible
8 Genetic code for the amino acid methionine is.
A. AUC
B. UGC
C. CGC
D. AUG
9 Chromosomal part which uncoils, during inter phase is called.
A. Chromatids
B. Satellite DNA
C. Euchromatin
D. Heterochromatin
10 A sequence of three nucleotides in mRNA is called.
A. Cistron
B. Codon
C. Anticodon
D. Templet

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