Cell Cycle Duration Varies by Organism — NEET Biology
📚 Practice ConceptA typical eukaryotic cell cycle is illustrated by human cells in culture. These cells divide once in approximately every 24 hours. However, this duration of cell cycle can vary from organism to organism and also from cell type to cell type. Yeast, for example, can progress through the cell cycle in only about 90 minutes.
Assertion (A): Cell division occurs exactly every 24 hours in dividing cells. Reason (R): The duration of cell cycle can vary from organism to organism and cell type to cell type.
View solution & NCERT explanation
Correct answer: D — If the assertion is false but the reason is true.
NCERT states “These cells divide once in approximately every 24 hours” - the Assertion removes “approximately” making it false (duration varies, not exactly 24 hours). The Reason is true from NCERT: “duration can vary from organism to organism and cell type to cell type.” This tests understanding that cell cycle timing is variable, not fixed.
What does NCERT say about typical eukaryotic cell cycle?
Has this concept appeared in NEET?
Which chapter is this from?
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