UNIT 5 REVIEW: Cell Cycle

Front

What is the cell cycle?

Back

The cell cycle is the series of phases that a cell goes through from its formation to its division into two daughter cells. It includes phases such as G1, S, G2, and M.

Front

What occurs during the G1 phase of the cell cycle?

Back

During the G1 phase, the cell grows and develops, synthesizing proteins and organelles necessary for DNA replication.

Front

What is apoptosis?

Back

Apoptosis is the process of programmed cell death that occurs in multicellular organisms, allowing for the removal of damaged or unnecessary cells.

Front

What happens during prophase?

Back

During prophase, the nuclear membrane disappears, chromosomes become visible, and centrioles move to opposite sides of the cell.

Front

What is the role of spindle fibers during cell division?

Back

Spindle fibers are responsible for separating chromosomes and pulling them to opposite poles of the cell during mitosis.

Front

What occurs during the S phase of the cell cycle?

Back

During the S phase, DNA replication occurs, resulting in the duplication of chromosomes.

Front

What is the significance of checkpoints in the cell cycle?

Back

Checkpoints are regulatory mechanisms that ensure the proper progression of the cell cycle, preventing errors such as DNA damage or incomplete replication.

Front

What occurs during metaphase?

Back

During metaphase, chromosomes line up at the equator of the cell, and spindle fibers attach to the centromeres.

Front

What is anaphase?

Back

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

Front

What happens during telophase?

Back

During telophase, the chromosomes reach the poles, the nuclear membrane re-forms, and the cell begins to divide.