AP Bio Insta-Review Topic 4.6*: Cell Cycle

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 interphase (G1, S, G2) and the mitotic phase (M).

Front

How many rounds of division occur in mitosis?

Back

1

Front

What are the phases of interphase?

Back

Interphase consists of three phases: G1 (cell growth), S (DNA synthesis/replication), and G2 (preparation for mitosis).

Front

What happens during the S phase of interphase?

Back

DNA replication occurs during the S phase, where each chromosome is duplicated to form sister chromatids.

Front

What is mitosis?

Back

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

Front

What are the main phases of mitosis?

Back

The main phases of mitosis are prophase, metaphase, anaphase, and telophase.

Front

What occurs during prophase?

Back

During prophase, chromatin condenses into visible chromosomes, the nuclear envelope breaks down, and spindle fibers begin to form.

Front

What occurs during metaphase?

Back

During metaphase, chromosomes align at the cell's equatorial plane, and spindle fibers attach to the centromeres.

Front

What occurs during anaphase?

Back

During anaphase, sister chromatids are pulled apart to opposite poles of the cell.

Front

What occurs during telophase?

Back

During telophase, two nuclear envelopes form around the separated sets of chromosomes, which begin to de-condense.