Cell Cycle Regulation

Front

What is the Spindle checkpoint (M checkpoint)?

Back

A regulatory mechanism in the cell cycle that ensures all chromosomes are properly attached to the spindle apparatus before proceeding with mitosis.

Front

What phase do cells spend the majority of their lives in?

Back

Interphase.

Front

What occurs during the G2 phase of the cell cycle?

Back

Cells undergo additional growth and prepare for mitosis.

Front

Which of the following is not a checkpoint in the cell cycle? G0 checkpoint, G1 checkpoint, G2 checkpoint, Spindle checkpoint?

Back

G0 checkpoint.

Front

What is the relaxed form of DNA found during most of interphase?

Back

Chromatin.

Front

What is the purpose of the G1 checkpoint?

Back

To assess cell size, nutrient availability, and DNA integrity before the cell enters the S phase.

Front

What happens during the S phase of the cell cycle?

Back

DNA replication occurs, resulting in two sister chromatids for each chromosome.

Front

What is the role of the G2 checkpoint?

Back

To ensure that DNA has been replicated correctly and that the cell is ready to enter mitosis.

Front

What is the significance of the M phase in the cell cycle?

Back

It is the phase where mitosis occurs, leading to the division of the cell into two daughter cells.

Front

Define interphase in the context of the cell cycle.

Back

The phase of the cell cycle where the cell spends most of its time, consisting of G1, S, and G2 phases.