17 Questions
What is the phase where chromosomes duplicate but remain attached?
Synthesis Phase (S)
What is the phase where more RNA and proteins are synthesized?
Second Growth Phase (G₂)
What is the phase where two daughter cells are produced from a mother cell?
Mitosis
What is the phase where the cell prepares for karyokinesis?
Interphase
Which phase is considered the resting phase in the cell cycle?
Resting phase (R)
What process do amoeba or bacteria use to reproduce?
Mitosis
What special kind of cell division occurs in the reproductive organs of higher forms like humans?
Meiosis
What is the significance of the reduction in chromosome number during meiosis?
It produces sex cells with genetic diversity.
What is the function of the cell cycle in a cell?
To duplicate DNA and produce daughter cells.
List three important tasks a cell must complete before dividing.
Grow, synthesize materials, duplicate DNA.
What is the series of events in a cell that leads to the duplication of its DNA and the division of the cell?
Cell cycle
What are the two main phases of a cell cycle?
Interphase and M-phase (mitosis)
Why was interphase formerly called the 'resting phase' of the cell?
Because no change in chromosomes is visible externally during interphase.
What are the three phases of interphase?
First growth phase, synthesis phase, and second growth phase.
What happens during the First Growth Phase (G1) of interphase?
RNA and proteins are synthesised, and the volume of cytoplasm increases.
What occurs during the Synthesis Phase (S) of interphase?
More DNA is synthesised and the chromosomes are duplicated.
Describe the Second Growth Phase (G1) of interphase.
It is a shorter growth phase where RNA and proteins necessary for cell division are synthesised.
Learn about reproduction through cell division, including mitosis and meiosis, in organisms like amoeba, bacteria, humans, and plants. Understand how sperms and eggs are produced with half the number of chromosomes.
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