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 of the following is a 'start' codon

Question # 2

Innate behavior is all except;

Question # 3

DNA was discovered in

Question # 4

Which one of the following is initiation codon.

Question # 5

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

Question # 6

In 1944 Oswald Avery along with Colin Macleod and Maclyn McCarty repeated experiments of

Question # 7

Highly condensed portions of the chromatin are called.

Question # 8

In sickle cell anemia code for glutamic acid is replaced by.

Question # 9

A chromosome with equal length of its arms.

Question # 10

Advantage of pecking orders is to:

Question # 11

No of chromosomes in Honey bee are.

Question # 12

Unlike most proteins, histones are.

Question # 13

Morphological characteristics of chromosome are collectively called.

Question # 14

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

Question # 15

Histones are positively charged due to an abundance of the basic amino acids

Question # 16

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

Question # 17

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

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FSc Part II Biology Chapter 0 Important MCQ's

Sr.# Question Answer
1 Origin site of replication is one in
A. Prokaryotes
B. Eukaryotes
C. None of these
D. Both a & b
2 The stand which elongates towards the replication fork is.
A. Leading
B. Lagging
C. Okazaki
D. Primer
3 DNA changes are called mutations and the organisms that have undergone such changes are called
A. Wild types
B. Changer
C. Mutants
D. Transmutants
4 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
5 Which strand of DNA is transcribed.
A. coding strand
B. Sense strand
C. Antisense strand
D. Conservative strand
6 DNA was discovered in
A. 1869
B. 1864
C. 1961
D. 1972
7 Chromosomes appear inside the nucleus at the time of.
A. Cell division
B. Cell maturation
C. Cell elongation
D. Cell differentiation
8 In sickle cell anemia disease, a single thymine is replaced with an adenine in the DNA that codes for.
A. Valine
B. Glycine
C. Histidine
D. Glutamic acid
9 Chromosomal part which uncoils, during inter phase is called.
A. Chromatids
B. Satellite DNA
C. Euchromatin
D. Heterochromatin
10 The genetic code for glycine is.
A. UAG
B. GAU
C. GUA
D. GGU

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