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 "

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Biology - 12th Class Biology Chapter 20 Short Questions Preparation

Question # 1

Define Euchromatin.

  • Ans 1: The part of DNA is expressed time to time and condensed only during the cell division is called euchromatin. This coiling helps in movement of chromosomes during cell division.
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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

Define Euchromatin.

  • Ans 1: The part of DNA is expressed time to time and condensed only during the cell division is called euchromatin. This coiling helps in movement of chromosomes during cell division.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 2

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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12th Class Biology Chapter 20 Short Questions Preparation - Set 3

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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12th Class Biology Chapter 20 Short Questions Preparation - Set 4

Question # 1

How many DNA polymerases are found in prokaryotes? Write their names.

  • Ans 1: There are three DNA polymerases namely I,II and III in bacteria.
    i) DNA polymerase I ii) DNA polymerase II iii) DNA polymerase III
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12th Class Biology Chapter 20 Short Questions Preparation - Set 5

Question # 1

Define phenylketonuria. OR What is phenylketonuria?

  • Ans 1: In phenylketonuria,phenylalanine is not degraded because of defective enzyme phenylalanine hydroxylase. Phenylalanine consequently accumulates in the cells leading to mental retardation,as the brain cells fails to develop in infancy.This disorder is due to point mutation.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 6

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

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