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

  • Available Sets6

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Biology - 12th Class Biology Chapter 20 Short Questions Preparation

Question # 1

What is transcription bubble? How is it formed?

  • Ans 1: The DNA strand open at specific place where enzyme is attached to the template strand forming transcription bubble.
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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

What is transcription bubble? How is it formed?

  • Ans 1: The DNA strand open at specific place where enzyme is attached to the template strand forming transcription bubble.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 2

Question # 1

What is function of RNA polymerases in transcription?

  • Ans 1: The function of RNA polymerases are as
  • Ans 2: RNA polymerase -i synthesize rRNA
    RNA polymerase -ii synthesize mRNA
    RNA polymerase -iii synthesize tRNA.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 3

Question # 1

What are nucleotides?

  • Ans 1: Nucleotide is structural unit of DNA. It composed of nitrogenous base,pentose sugar and phosphate group.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 4

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 5

Question # 1

What is role of promoter is transcription?

  • Ans 1: Promoter is responsible for the correct initiation of transcription process.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 6

Question # 1

Name types of RNA.

  • Ans 1: There are three types of RNA,which are named as

  • Ans 2: i) Transfer RNA or tRNA, ii) Messenger RNA or mRNA, iii) Ribosomal RNA or r RNA.
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20th Chapter

12th Class Biology Chapter 20 Short Questions

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