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

Adenine and guanine are called

Question # 2

Which of the following polymerase synthesize tRNA.

Question # 3

Each Okazaki fragment is synthesized by.

Question # 4

Which one is non-directed orientation?

Question # 5

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

Question # 6

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

Question # 7

Which strand of DNA is transcribed.

Question # 8

Which one of the following is initiation codon.

Question # 9

This condition appears as a result of point mutation.

Question # 10

A sequence of three nucleotides in mRNA is called.

Question # 11

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

Question # 12

All the 64 codons were tested by

Question # 13

Anti codes present on

Question # 14

Morphological characteristics of chromosome are collectively called.

Question # 15

In sickle cell anemia disease, a single thymine is replaced with an adenine in the DNA that codes for.

Question # 16

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

Question # 17

The stand which elongates towards the replication fork is.

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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 In sickle cell anemia code for glutamic acid is replaced by.
A. Leucine
B. Valine
C. Proline
D. Histidine
2 DNA was discovered in
A. 1869
B. 1864
C. 1961
D. 1972
3 The number of chromosomes in frog is
A. 52
B. 26
C. 13
D. 7
4 No of chromosomes in Honey bee are.
A. 6
B.
20
C. 32
D. 40
5 Each tRNA has a sequence of three bases called anticodon which is complementary to codon of
A. rRNA
B. tRNA
C. mRNA
D. snRNA
6 Genetic code is a combination of 3 nucleotides in DNA which specify a particular
A. Amino acid
B. Fatty acid
C. Vitamin
D. Steriod
7 32P and 35S labeled viruses were used in his experiments by
A. Watson & Crick
B. Hershey & Chase
C. Wilkins & Franklin
D. Correns & Bridge
8 Anti codes present on
A. mRNA
B. tRNA
C. rRNA
D. DNA
9 Which of the following polymerase synthesize tRNA.
A. RNA Polymerase -I
B. RNA Polymerase -III
C. RNA Polymerase -II
D. DNA Polymerase
10 Genetic code for the amino acid methionine is.
A. AUC
B. UGC
C. CGC
D. AUG

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