12 Class Fsc Part 2 Short Questions Online Preparation of biology chapter 20 (Chromosoms and DNA)

Online Short Questions For Chapter 6 "12th Class Biology Chapter 20 Short Questions Preparation "

Try The Short Questions For 12th Class Biology Chapter 20 Short Questions Preparation

  • Total Questions10

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Biology - 12th Class Biology Chapter 20 Short Questions Preparation

Question # 1

Write role of DNA ligase.

  • Ans 1: The function of DNA ligase is to fill the nicks (small gaps) or to join the Okazaki fragments to make a continuous strand of DNA.
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Prepare Complete Set Wise Questions For Chapter 6 "12th Class Biology Chapter 20 Short Questions Preparation "

12th Class Biology Chapter 20 Short Questions Preparation - Set 1

Question # 1

Write role of DNA ligase.

  • Ans 1: The function of DNA ligase is to fill the nicks (small gaps) or to join the Okazaki fragments to make a continuous strand of DNA.
Submit

12th Class Biology Chapter 20 Short Questions Preparation - Set 2

Question # 1

What is contribution of Erwin chargaff with respect to chemical nature of DNA?

  • Ans 1: He formulated chargaff rule. He proposed that ratio of purines is equal to pyrimidines and ratio of adenine and thymine is equal to guanine and cytosine.
    A+T=G+C
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12th Class Biology Chapter 20 Short Questions Preparation - Set 3

Question # 1

What is phosphodiester linkage?

  • Ans 1: The reaction between the phosphate group of one nucleotide and the hydroxyl group of another is dehydration synthesis,eliminating water molecule and forming a covalent bond that links the two groups is called phosphodiester bond.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 4

Question # 1

Write role of DNA ligase.

  • Ans 1: The function of DNA ligase is to fill the nicks (small gaps) or to join the Okazaki fragments to make a continuous strand of DNA.
Submit

12th Class Biology Chapter 20 Short Questions Preparation - Set 5

Question # 1

Define Mutation.

  • Ans 1: The sudden change in DNA or gene is called mutation.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 6

Question # 1

Define initiation codon. What does it codes for?

  • Ans 1: Initiation codon is first codon in the process of protein synthesis from where protein synthesis starts.It codes for methionine.
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20th Chapter

12th Class Biology Chapter 20 Short Questions

Here you can prepare 12th Class Biology Chapter 20 (Chromosoms and DNA). Click the button for 100% free full practice.

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