Cell Cycle Regulation

Front

What is the G1 checkpoint?

Back

The G1 checkpoint is a stage in the cell cycle where the cell checks for size, nutrients, growth factors, and DNA damage before proceeding to DNA synthesis.

Front

What occurs during interphase?

Back

During interphase, the cell grows, replicates its DNA, and obtains nutrients. Cell division does NOT occur during this phase.

Front

List the stages of the cell cycle in order.

Back

The stages of the cell cycle in order are: G1, S, G2, M.

Front

How long do cells spend in interphase?

Back

Cells spend the majority of their lives in interphase, which includes G1, S, and G2 phases.

Front

What is a checkpoint in the cell cycle?

Back

A checkpoint is a stage in the eukaryotic cell cycle where the cell examines internal and external cues to decide whether to proceed with division.

Front

What happens during the S phase of the cell cycle?

Back

During the S phase, DNA replication occurs, resulting in the duplication of chromosomes.

Front

What is the role of the G2 checkpoint?

Back

The G2 checkpoint ensures that DNA has been replicated correctly and checks for DNA damage before the cell enters mitosis.

Front

What is mitosis?

Back

Mitosis is the process of cell division that results in two genetically identical daughter cells.

Front

What is the significance of the spindle checkpoint?

Back

The spindle checkpoint ensures that all chromosomes are properly attached to the spindle apparatus before the cell proceeds with mitosis.

Front

What are growth factors?

Back

Growth factors are proteins that stimulate cell division and growth, playing a crucial role in the regulation of the cell cycle.