Banasthali Vidyapith
Department of Bioscience and Biotechnol
Cell cycle and mitosis
,Cell cycle: It is series of events that take place in a cell leading to its
division and duplication
Eukaryotic cell cycle can be divided into 2 phases:
1. Interphase (Preparative phase): Earlier it was believed it is resting p
actually in this phase cell grow accumulating nutrients needed fo
replication and mitosis
2. Mitosis (M-Phase/division phase): Cell split into 2 daughter cells
Cell growth: Synthesis of macromolecules (carbohydrate, protein lipid DN
Accumulation of these products causes volume of cell to increase, PM g
prevent the cell from bursting but cell can not grows continuously so cel
followed by cell division.
,
, Cell cycle:
G0 Phase:
• This G0 phase is reversible and irreversible in some eukaryotic cells
• It is reversible in some plant cells
• It is irreversible in some animal cells
• The plant cells comes out of the cell cycle and become specialized to
the function they are differentiated (non dividing mature cells)
• If required the differentiated Parenchyma cells come back to cycle
• If parenchyma cells has to divide again they have to come in the cyc
dedifferentiation
• If Parenchyma or new cells again perform specialized function again g
the cycle that process called redifferentiation
Department of Bioscience and Biotechnol
Cell cycle and mitosis
,Cell cycle: It is series of events that take place in a cell leading to its
division and duplication
Eukaryotic cell cycle can be divided into 2 phases:
1. Interphase (Preparative phase): Earlier it was believed it is resting p
actually in this phase cell grow accumulating nutrients needed fo
replication and mitosis
2. Mitosis (M-Phase/division phase): Cell split into 2 daughter cells
Cell growth: Synthesis of macromolecules (carbohydrate, protein lipid DN
Accumulation of these products causes volume of cell to increase, PM g
prevent the cell from bursting but cell can not grows continuously so cel
followed by cell division.
,
, Cell cycle:
G0 Phase:
• This G0 phase is reversible and irreversible in some eukaryotic cells
• It is reversible in some plant cells
• It is irreversible in some animal cells
• The plant cells comes out of the cell cycle and become specialized to
the function they are differentiated (non dividing mature cells)
• If required the differentiated Parenchyma cells come back to cycle
• If parenchyma cells has to divide again they have to come in the cyc
dedifferentiation
• If Parenchyma or new cells again perform specialized function again g
the cycle that process called redifferentiation
