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 Okazaki fragment is synthesized by.

Question # 2

RNA polymerase II synthesize.

Question # 3

Morphological characteristics of chromosome are collectively called.

Question # 4

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

Question # 5

In 1953 Watson and Crick proposed structure of the

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

A chromosome with equal length of its arms.

Question # 10

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

Question # 11

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

Question # 12

Adenine and guanine are called

Question # 13

Which of the following is a 'start' codon

Question # 14

Which of the following polymerase synthesize tRNA.

Question # 15

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

Question # 16

The base pairs in human genome are.

Question # 17

Chromosomes appear inside the nucleus at the time of.

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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 The genetic code for glycine is.
A. UAG
B. GAU
C. GUA
D. GGU
3 Genetic code for the amino acid methionine is.
A. AUC
B. UGC
C. CGC
D. AUG
4 Pentose sugar in the molecule of DNA is
A. Ribose
B. Deoxyribose
C. Sucrose
D. Lactose
5 V-shaped chromosomes are called.
A. Acrocentric
B. Metacentric
C. Telocentric
D. submetacentric
6 Chromosomes appear inside the nucleus at the time of.
A. Cell division
B. Cell maturation
C. Cell elongation
D. Cell differentiation
7 The number of nucleotides in the DNA of a typical human chromosome is about
A. 10 Million
B. 40 million
C. 80 million
D. 140 million
8 Highly condensed portions of the chromatin are called.
A. Homochromatin
B. Heterochromatin
C. Euchromatin
D. Achromatin
9 DNA changes are called mutations and the organisms that have undergone such changes are called
A. Wild types
B. Changer
C. Mutants
D. Transmutants
10 In prokaryote within promoter there are two binding sites TTGACA also called -35 sequence and TATAAT also called
A. -10 sequence
B. - 20 sequence
C. - 30 sequence
D. - 35 sequence

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