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

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

Total Question
15 Questions
Total Marks
30 Marks
Total Time
15 Minuts
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12th Biology Class Test
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Test Name



Ch.20 # Chromosome and DNA

Subject



Biology (10th Class)

Test Type



MCQs


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

Question 1 of 15

Question 2 of 15

2. Semi conservative replication refers to the fact that:
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2.
3.
4.

Question 2 of 15

Question 3 of 15

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

1.
2.
3.
4.

Question 3 of 15

Question 4 of 15

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

Question 4 of 15

Question 5 of 15

5. A sub metacentric chromosome has centromere:
1.
2.
3.
4.

Question 5 of 15

Question 6 of 15

6. Synthesis of a new DNA strand usually begins with:
1.
2.
3.
4.

Question 6 of 15

Question 7 of 15

7. In eukaryotic cells, transcription cannot begin until:
1.
2.
3.
4.

Question 7 of 15

Question 8 of 15

8. In his work with peneumonia-causing bacteria and mice, Griffith found that:
1.
2.
3.
4.

Question 8 of 15

Question 9 of 15

9. 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 9 of 15

Question 10 of 15

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

Question 10 of 15

Question 11 of 15

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

Question 11 of 15

Question 12 of 15

12. 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 12 of 15

Question 13 of 15

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

Question 13 of 15

Question 14 of 15

14. The elongation of the leading strand during DNA synthesis:
1.
2.
3.
4.

Question 14 of 15

Question 15 of 15

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

Question 15 of 15


 

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