9.1-9.2 Cell Cycle and Mitosis Concepts

Front

What is mitosis?

Back

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

Front

What are the phases of the cell cycle?

Back

The cell cycle consists of interphase (G1, S, G2) and the mitotic phase (M phase).

Front

What happens during the S phase of the cell cycle?

Back

During the S phase, the cell duplicates its DNA, resulting in two complete sets of chromosomes.

Front

What is the role of spindle fibers in mitosis?

Back

Spindle fibers are structures that help separate chromatids during mitosis, ensuring each daughter cell receives an identical set of chromosomes.

Front

How many picograms of DNA are present in a cell during the G2 phase if there are 8 picograms after mitosis?

Back

There would be 16 picograms of DNA in the G2 phase, as the DNA is duplicated during the S phase.

Front

What is the difference between mitosis and meiosis?

Back

Mitosis results in two identical daughter cells, while meiosis results in four genetically diverse gametes.

Front

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

Back

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

Front

What occurs during the M phase of the cell cycle?

Back

The M phase includes both mitosis and cytokinesis, leading to the division of the cell's nucleus and cytoplasm.

Front

What is chromatid?

Back

A chromatid is one half of a duplicated chromosome, which is joined to its sister chromatid by a centromere.

Front

What is the function of centrioles during mitosis?

Back

Centrioles help organize the spindle fibers that separate the chromosomes during mitosis.