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 strand of DNA is transcribed.

Question # 2

In 1882, chromosomes were first observed by.

Question # 3

The stand which elongates towards the replication fork is.

Question # 4

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

Question # 5

The number of chromosomes in frog is

Question # 6

Chromosomal part which uncoils, during inter phase is called.

Question # 7

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

Question # 8

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

Question # 9

Walter Fleming first discovered chromosomes in the dividing cells of.

Question # 10

A chromosome with equal length of its arms.

Question # 11

Advantage of pecking orders is to:

Question # 12

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

Question # 13

A sequence of three nucleotides in mRNA is called.

Question # 14

Human cells contain types of tRNA molecules.

Question # 15

Amino acid attachment site of tRNA is.

Question # 16

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

Question # 17

Chromosomal theory of inheritance was first formulated 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 Human cells have 46 chromosomes consisting of
A. 20 pairs
B. 21 pairs
C. 22 pairs
D. 23 pairs
2 Genetic code is a combination of 3 nucleotides in DNA which specify a particular
A. Amino acid
B. Fatty acid
C. Vitamin
D. Steriod
3 Chromosomes appear inside the nucleus at the time of.
A. Cell division
B. Cell maturation
C. Cell elongation
D. Cell differentiation
4 DNA was discovered in
A. 1869
B. 1864
C. 1961
D. 1972
5 Which of the following is a 'start' codon
A. AUG
B. UAG
C. UAA
D. UGA
6 Origin site of replication is one in
A. Prokaryotes
B. Eukaryotes
C. None of these
D. Both a & b
7 Innate behavior is all but;
A. Heritable
B. Intrinsic
C. Sterotypic
D. Flexible
8 In 1953 Watson and Crick proposed structure of the
A. RNA molecule
B. ATP molecule
C. DNA molecule
D. NAD molecule
9 Every gene starts with initiation codon AUG which encodes for the amino acid.
A. Lysine
B. Serine
C. Proline
D. Methionine
10 A sequence of three nucleotides in mRNA is called.
A. Cistron
B. Codon
C. Anticodon
D. Templet

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