Fsc part 2 online preparation for biology chapter 21 (Cell Cycle)

Online Short Questions For Chapter 7 "12th Class Biology Chapter 21 Short Questions Preparation "

Try The Short Questions For 12th Class Biology Chapter 21 Short Questions Preparation

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Biology - 12th Class Biology Chapter 21 Short Questions Preparation

Question # 1

What is Klinfelter's syndrome?

  • Ans 1: The individual have an additional sex chromosome i.e,47.(44+xxy).They are phenotypically male but have frequently enlarged breast,tendency to tallness,obesity,small testes with no sperms at ejaculation and under development of Secondary sex characters.
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Prepare Complete Set Wise Questions For Chapter 7 "12th Class Biology Chapter 21 Short Questions Preparation "

12th Class Biology Chapter 21 Short Questions Preparation - Set 1

Question # 1

What is Klinfelter's syndrome?

  • Ans 1: The individual have an additional sex chromosome i.e,47.(44+xxy).They are phenotypically male but have frequently enlarged breast,tendency to tallness,obesity,small testes with no sperms at ejaculation and under development of Secondary sex characters.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 2

Question # 1

What change occurs in dividing cell during zygotene?

  • Ans 1: Pairing of chromosomes takes place during the zygetene stage of the meiosis.
    Pairing may start from center to towards end or may start from one end to another end.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 3

Question # 1

What changes occur in a cell during apoptosis?

  • Ans 1: During apoptosis the cell shrink and condensed ultimately split up thus release the small membrane bounded apoptotic bodies which are generally phagocytosed by other cells. Intracellular constituents are not released freely in extracellular environment which otherwise might have toxic effect.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 4

Question # 1

Differentiate between malignent and benign tumor.

  • Ans 1: Maligent tumor: Malignant tumor or cancer divides more rapidly,mostly invade surrounding tissues get enter in circulatory system for spreading into other body parts.
  • Ans 2: Benign tumor: The small sized local tumor is called benign tumor.Its cells behaves like normal cells and less dangerous.
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Biology
21th Chapter

12th Class Biology Chapter 21 Short Questions

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