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

Differentiate between codon and anticodon.

  • Ans 1: Codon: Codon is sequence of three nucleotides present on mRNA and specifies an amino acid.
    For Example codon for methionine is AUG.
  • Ans 2: Anti Codon: Anticodon is the sequence of three nucleotides present on tRNA,anti codon of metionine is UAC.
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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

Differentiate between codon and anticodon.

  • Ans 1: Codon: Codon is sequence of three nucleotides present on mRNA and specifies an amino acid.
    For Example codon for methionine is AUG.
  • Ans 2: Anti Codon: Anticodon is the sequence of three nucleotides present on tRNA,anti codon of metionine is UAC.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 2

Question # 1

What is tRNA? Give its role.

  • Ans 1: tRNA is a type of RNA which is 70 to 90 nucleotides in length. It transfers amino acids during the protein synthesis to the place where protein is synthesized in the cell.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 3

Question # 1

What are chromosomal aberrations? Give its reasons.

  • Ans 1: Unequal distribution of chromosomes in daughter cell during cell division or any change in the structure of chromosome leads to abnormalities in chromosome in daughter cell,it is called chromosomal aberration.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 4

Question # 1

Define sense & antisense strands of DNA?

  • Ans 1: The strand of DNA which is transcribed is called template or antisense strand and the opposite strand is called sense strand.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 5

Question # 1

What is translation? Or Define translation.

  • Ans 1: Synthesis of protein from the mRNA is called translation.It is second step of central dogma.
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12th Class Biology Chapter 20 Short Questions Preparation - Set 6

Question # 1

Give the functions of the DNA polymerase III.

  • Ans 1: DNA polymerase III progressively threads the DNA through the enzyme complex,moving at rapid rate,some 1000 nucleotides/second.
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12th Class Biology Chapter 20 Short Questions

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