NEET2012BotanyCell Cycle and Cell DivisionActual
Which of the following statements is incorrect about G ₀ phase?
Options
- AMitosis occurs after G₀ phase.
- BBiocatalysts can be used to exit G ₀ phase.
- CCell volume keeps on increasing during this phase.
- DCell metabolism occurs continuously in G ₀ phase.
Correct answer
A. Mitosis occurs after G₀ phase.
Step-by-step solution
G₀ phase is the stage of inactivation of cell cycle due to non-availability of mitogens and energy rich compounds. The cells in this phase remain metabolically active and usually grow in size assuming particular shape (cell differentiation). Cell enters G₀ phase from a cell cycle checkpoint in the G₁ phase. G₁ phase checkpoint (restriction point) takes the key decision whether the cell should divide, delay division or enter resting stage. Cells then remain in G₀ phase until there is a reason for them to divide. Sev