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

  • Total Questions10

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Biology - 12th Class Biology Chapter 21 Short Questions Preparation

Question # 1

How does cell death help in development of multicellular organisms?

  • Ans 1: Programmed cell death help in proper control of multicellular organisms development,which may lead to deletion of entire structure (e.g.,the tail of the developing human embryo) or a part of structure (e.g.,tissues between developing digits).Cell death even controls number of neurons because most of the neurons in human body die during development.
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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

How does cell death help in development of multicellular organisms?

  • Ans 1: Programmed cell death help in proper control of multicellular organisms development,which may lead to deletion of entire structure (e.g.,the tail of the developing human embryo) or a part of structure (e.g.,tissues between developing digits).Cell death even controls number of neurons because most of the neurons in human body die during development.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 2

Question # 1

Differentiate between cancer cell and normal cell or Write a least three characters of cancer cells.

  • Ans 1: Cancer cell can be distinguished from normal cells because they are less differentiated than normal cells,exhibit the characteristics of rapidly growing cell,i.e,is high nucleus to cytoplasmic ratio,prominent nucleoli and many mitosis.
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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

Name only stages of prophase I of meiosis.

  • Ans 1: Following are the sub stages of prophase I of meiosis
  • Ans 2: i) Leptotene ii) zygotene iii) pachytene iv) diplotene v) diakinesis
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Biology
21th Chapter

12th Class Biology Chapter 21 Short Questions

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