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Questions and Answers
Who first observed cell division?
Walter Flemming
First cell division was observed in?
Sea salamander
The process by which ___ cells are produced fm a cell by process of division is called ___
Two / four cells, cell division
Amitosis occurs in Endosperm of seeds
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Amitosis occurs in cartilage of vertebra
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Who proposed cell cycle
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Cell cycle of yeast is
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Cell cycle of E.coli is
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M phase requires 18-19 hours in
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Which growth factor is responsible for increase in number of RBC in bone marrow
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How many types of cycling compound are there?
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Which cycling takes cell from G1 to S to G2
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Cyclin A prepares cell for DNA replication
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Function of cyclin B
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Interphase state is called __ nucleus
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Which is the longest phase in interphase
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P⁵³ cell is called
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Histone protein is synthesized in
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In mammals S phase last for 6hours
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In G2 phase, division of __ organelles take place
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Study Notes
Cell Division Observation
- Robert Remak first observed cell division.
- First cell division observation was in plants.
Cell Production
- The process by which new cells are produced from a cell by division is called cell division.
Amitosis
- Amitosis occurs in the endosperm of seeds.
- Amitosis occurs in the cartilage of vertebrae.
Cell Cycle
- Howard and Pelc proposed the cell cycle.
- Yeast cell cycle is 90 minutes.
- E. coli cell cycle is 20 minutes.
- M phase requires 18-19 hours in higher plants.
- Erythropoietin is the growth factor responsible for increasing the number of red blood cells in bone marrow.
Cyclins
- There are four types of cycling compounds.
- The cell cycle takes the cell from G1 to S to G2.
- Cyclin A prepares the cell for DNA replication.
- Cyclin B regulates the progression through mitosis.
Interphase
- The interphase state is called the resting nucleus.
- The longest phase in interphase is G1.
- The P53 cell is called the guardian of the genome.
Other Cellular Processes
- Histone protein synthesis occurs during the S phase.
- In mammals, the S phase lasts for 6 hours.
- In the G2 phase, the division of cytoplasmic organelles takes place.
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Description
Cell division: Amitosis & cell cycle
