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

The copping of mRNA from DNA is called.

Question # 2

A chromosome with equal length of its arms.

Question # 3

Adenine and guanine are called

Question # 4

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

Question # 5

Which of the following is a 'start' codon

Question # 6

Advantage of pecking orders is to:

Question # 7

Origin site of replication is one in

Question # 8

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

Question # 9

DNA was discovered in

Question # 10

All the 64 codons were tested by

Question # 11

Morphological characteristics of chromosome are collectively called.

Question # 12

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

Question # 13

Which one is non-directed orientation?

Question # 14

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

Question # 15

How many million nucleotides are in DNA of typical human chromosome

Question # 16

V-shaped chromosomes are called.

Question # 17

Human cells have 46 chromosomes consisting of

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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 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
3 Each tRNA has a sequence of three bases called anticodon which is complementary to codon of
A. rRNA
B. tRNA
C. mRNA
D. snRNA
4 Each Okazaki fragment is synthesized by.
A. RNA Polymerase
B. DNA polymerase
C. DNA polymerase I
D. DNA polymerase III
5 Okazaki fragments are about 1000 - 2000 nucleotides long in
A. Prokaryotes
B. Eukaryotes
C. Both a & b
D. None of these
6 A chromosome with equal length of its arms.
A.
Acrocentric
B. Metacentric
C. sub meta centric
D. Telocentric
7 In the double helix of DNA adenine forms two hydrogen bonds with
A. Thymine
B. Guanine
C. Cytosine
D. Uracil
8 Repeating units of DNA are called.
A. Histones
B. Nucleosides
C. Nucleotides
D. Amino acids
9 In 1944 Oswald Avery along with Colin Macleod and Maclyn McCarty repeated experiments of
A. Lamarck
B. Griffith
C. Darwin
D. Spemann
10 Chromosomes appear inside the nucleus at the time of.
A. Cell division
B. Cell maturation
C. Cell elongation
D. Cell differentiation

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    Keval

    12 Dec 2017

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