Cell Cycle and DNA Replication

Front

What is the importance of the cell cycle?

Back

It is the mechanism for growth by increasing the total number of cells and for replacing damaged or old cells.

Front

How does the cell cycle support growth?

Back

By producing new cells that allow an organism to increase in size and replace worn-out cells.

Front

What ensures each daughter cell receives the correct genetic information?

Back

DNA replication, which copies the DNA before the cell divides.

Front

What is the cell cycle?

Back

The sequence of events that results in cell growth and division into two daughter cells.

Front

What are the main stages of the cell cycle?

Back

Interphase (G0, G1, S, G2) and M phase (mitosis and cytokinesis).

Front

What is Interphase?

Back

The period between cell divisions when the cell grows, performs normal functions, and prepares to divide.

Front

What happens during the G0 phase?

Back

The cell is resting and not preparing to divide, such as in neurons and some stem cells.

Front

What happens during the G1 phase (Gap 1)?

Back

The cell grows, makes new enzymes and molecules, and stores nutrients while preparing for DNA replication.

Front

What is checked during G1 phase?

Back

The cell verifies that it is ready to proceed to DNA replication.

Front

What happens during the S phase?

Back

DNA is synthesized (replicated), producing two identical copies of the DNA.