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

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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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

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.
Submit

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

Question # 1

What are mutagens? Give one example.

  • Ans 1: In genetics,a mutagen is a physical or chemical agent that changes the genetic material,usually DNA of an organism and thus increases the frequency of mutations.
    For Example: X-ray,ultraviolet radiations etc.
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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

What is point mutation? Give two examples.

  • Ans 1: Point mutation are mutational changes that affects the message itself,producing alterations in the sequence of DNA nucleotides. If alteration involves mutations.For example sickle cell anemia and phenylketonuria.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 5

Question # 1

Where codon and anticodon are situated?

  • Ans 1: Codon are situated on mRNA(messenger RNA) while anticodon are situated on tRNA(transfer RNA).

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12th Class Biology Chapter 20 Short Questions Preparation - Set 6

Question # 1

What are mutagens? Give one example.

  • Ans 1: In genetics,a mutagen is a physical or chemical agent that changes the genetic material,usually DNA of an organism and thus increases the frequency of mutations.
    For Example: X-ray,ultraviolet radiations etc.
Submit

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12th Class Biology Chapter 20 Short Questions

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