Punjab 12th Class Biology Chapter 20 Chromosome and DNA Mcqs Test Online
Questions 15
Total Marks 30
Time 15 Mins
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Punjab 12th Class Biology Chapter 20 Chromosome and DNA Mcqs Test Online

Punjab 12th Class Chromosome and DNA Biology Chapter 20 Mcqs Test Online

 

Question 1 of 15

Biology

1. Whose pioneering work on the gene used the bacteriophage to show that DNA was the part of this virus which went into the bacterial cell for replication?
1.
2.
3.
4.

Question 1 of 15

Question 2 of 15

2. Chromosomes are made of:
1.
2.
3.
4.

Question 2 of 15

Question 3 of 15

3. The elongation of the leading strand during DNA synthesis:
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2.
3.
4.

Question 3 of 15

Question 4 of 15

4. In his work with peneumonia-causing bacteria and mice, Griffith found that:
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2.
3.
4.

Question 4 of 15

Question 5 of 15

5. A typical human chromosome contains __________ nucleotides in its DNA
1.
2.
3.
4.

Question 5 of 15

Question 6 of 15

6. The anticodon of a particular tRNA molecule is:
1.
2.
3.
4.

Question 6 of 15

Question 7 of 15

7. Chromosomes are composed of
1.
2.
3.
4.

Question 7 of 15

Question 8 of 15

8. Histones have abundance of amino acids
1.
2.
3.
4.

Question 8 of 15

Question 9 of 15

9. Semi conservative replication refers to the fact that:
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2.
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4.

Question 9 of 15

Question 10 of 15

10. A biochemist isolates and purities molecules needed for DNA replication. When DNA is added, replication occurs, but each DNA molecule consists of a normal strand paired with numerous segments of DNA a few hundred nucleotides long. What has probably been left out of the mixture?

1.
2.
3.
4.

Question 10 of 15

Question 11 of 15

11. If you want to label amino acids but not DNA, which of the following radioactive isotopes would you use?

1.
2.
3.
4.

Question 11 of 15

Question 12 of 15

12. Synthesis of a new DNA strand usually begins with:
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2.
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4.

Question 12 of 15

Question 13 of 15

13. In eukaryotic cells, transcription cannot begin until:
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4.

Question 13 of 15

Question 14 of 15

14. A sub metacentric chromosome has centromere:
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2.
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4.

Question 14 of 15

Question 15 of 15

15. What is the basis for the difference in how the leading and lagging strands of DNA molecules are synthesized?
1.
2.
3.
4.

Question 15 of 15


 

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