2nd Year Biology Chapter 23 Online Preparation (Biotechnology)

Online Short Questions For Chapter 9 "12th Class Biology Chapter 23 Short Questions Preparation "

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  • Total Questions10

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Biology - 12th Class Biology Chapter 23 Short Questions Preparation

Question # 1

What is cloning of a gene?

  • Ans 1: Cloning of gene produces many identical copies of a gene. Recombinant DNA technology is used when a very large quantity of gene is required.The use of polymerase chain reaction is a method to create many thousand copies of a particular gene at a time.
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Prepare Complete Set Wise Questions For Chapter 9 "12th Class Biology Chapter 23 Short Questions Preparation "

12th Class Biology Chapter 23 Short Questions Preparation - Set 1

Question # 1

What is cloning of a gene?

  • Ans 1: Cloning of gene produces many identical copies of a gene. Recombinant DNA technology is used when a very large quantity of gene is required.The use of polymerase chain reaction is a method to create many thousand copies of a particular gene at a time.
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12th Class Biology Chapter 23 Short Questions Preparation - Set 2

Question # 1

What is aspartame?

  • Ans 1: Aspartame is a dipeptide sweetner better known as nutrasweet.
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12th Class Biology Chapter 23 Short Questions Preparation - Set 3

Question # 1

Define Transgenic Plants.Give its two uses.

  • Ans 1: Plants having foreign genes incorporated into their cells are known as transgenic plants.Two uses of transgenic plant are:
  • Ans 2: i) A weed called mouse-eared cress has been engineered to produce a biodegradable plastic in cell grannules.
    ii) Plants are being engineered to produce human hormones,clotting factors and antibodies in their seeds.
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12th Class Biology Chapter 23 Short Questions Preparation - Set 4

Question # 1

What are cumulus cells?

  • Ans 1: Cumulus cells are those cells which attached or cling to an egg after ovulation.
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12th Class Biology Chapter 23 Short Questions Preparation - Set 5

Question # 1

What are palindromic sequences? OR Define palindromic sequence.

  • Ans 1: Restriction enzymes cut the DNA at very specific sites characterized by specific sequence of four or six nucleotides arranged symmetrically in the reverse order.Such sequences are known as palindromic sequences.
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12th Class Biology Chapter 23 Short Questions Preparation - Set 6

Question # 1

Give briefly the application of PCR amplification and analysis.

  • Ans 1: Application of PCR amplification and analysis are
  • Ans 2: i. To diagnose viral infections,genetic disorders and cancer
    ii. In forensic labs to identify criminals
    iii. To determine evolutionary history of human
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12th Class Biology Chapter 23 Short Questions

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