Cell Cycles: Life and Death

Front

What is the cell cycle?

Back

The cell cycle is the series of events that take place in a cell leading to its division and duplication (replication). It consists of phases: interphase (G1, S, G2) and mitotic phase (M).

Front

What happens during interphase?

Back

Interphase is the phase of the cell cycle where the cell grows, duplicates its DNA, and prepares for mitosis. It includes G1 (cell growth), S (DNA synthesis), and G2 (preparation for mitosis).

Front

Define mitosis.

Back

Mitosis is the process of cell division that results in two identical daughter cells, each with the same number of chromosomes as the parent cell.

Front

What is anaphase?

Back

Anaphase is the stage of mitosis where the sister chromatids are pulled apart to opposite poles of the cell.

Front

What occurs during telophase?

Back

Telophase is the final stage of mitosis where the chromosomes de-condense, nuclear membranes reform around each set of chromosomes, and the cell prepares to divide.

Front

What is the significance of cell cycle checkpoints?

Back

Cell cycle checkpoints are critical control mechanisms that ensure the proper progression of the cell cycle, allowing for the repair of damaged DNA before cell division.

Front

What is DNA replication?

Back

DNA replication is the process by which a cell makes an exact copy of its DNA, ensuring that each daughter cell receives a complete set of genetic information.

Front

What is the role of the G1 phase in the cell cycle?

Back

The G1 phase is the first stage of interphase where the cell grows and synthesizes proteins necessary for DNA replication.

Front

What happens during the S phase of the cell cycle?

Back

During the S phase, DNA synthesis occurs, resulting in the replication of the cell's genetic material.

Front

What is cytokinesis?

Back

Cytokinesis is the process that follows mitosis, where the cytoplasm of a parental cell divides into two daughter cells.