Phases of the Cell Cycle

Front

What is the S phase of the cell cycle?

Back

The S phase (Synthesis phase) is the part of the cell cycle where DNA is replicated, resulting in two identical sets of chromosomes.

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, the chromatin condenses into visible chromosomes, the nuclear envelope breaks down, and the mitotic spindle begins to form.

Front

What happens during Metaphase?

Back

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

Front

What is Anaphase?

Back

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

Front

What occurs during Telophase?

Back

During Telophase, the chromosomes de-condense back into chromatin, the nuclear envelope re-forms around each set of chromosomes, and the cell prepares to divide.

Front

What is the purpose of the G1 checkpoint?

Back

The G1 checkpoint assesses the cell's size, nutrients, and DNA integrity before the cell enters the S phase.

Front

What is the G2 checkpoint?

Back

The G2 checkpoint ensures that DNA has been replicated correctly and that the cell is ready to enter mitosis.

Front

What is the M checkpoint?

Back

The M checkpoint occurs during mitosis and ensures that all chromosomes are properly attached to the spindle before proceeding to anaphase.

Front

What is Interphase?

Back

Interphase is the phase of the cell cycle where the cell spends most of its time, consisting of G1, S, and G2 phases, preparing for mitosis.