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

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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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

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 2

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 3

Question # 1

Describe changes occur in during G1phase.

  • Ans 1: It is period of extensive metabolic activities,in which cell normal grows in size,specific enzymes are synthesized and DNA base units are accumulated for the DNA synthesis
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12th Class Biology Chapter 21 Short Questions Preparation - Set 4

Question # 1

Give length of cell cycle during mitosis in human cell.

  • Ans 1: In human average cell cycle is about is 24 hours Mitosis takes 30 minutes, G1phase takes 9 hours, S-phase takes 10 hours, and G2 phase takes 4.5 hours.
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Biology
21th Chapter

12th Class Biology Chapter 21 Short Questions

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