Cell Cycle and Cell Division Quiz

The two main stages of the cell cycle in eukaryotic cells are interphase and mitosis. Interphase is the stage during which the cell grows, accumulates nutrients needed for mitosis, and replicates its DNA and some of its organelles. Mitosis is the stage during which the replicated chromosomes, organelles, and cytoplasm separate into two new daughter cells.

Cell cycle checkpoints are control mechanisms that determine if the cell can progress to the next phase of the cell cycle. They are located after each of the key steps of the cycle and ensure the proper replication of cellular components and division.

The events that take place in a cell during the cell cycle include the duplication of its DNA (DNA replication) and some of its organelles, as well as the partitioning of its cytoplasm, chromosomes, and other components into two daughter cells in a process called cell division.

In cells without nuclei, the cell cycle is divided into the B, C, and D periods. The B period extends from the end of cell division to the beginning of DNA replication. DNA replication occurs during the C period, and the D period refers to the stage between the end of DNA replication and the splitting of the bacterial cell into two daughter cells.

The M phase in the cell cycle, also known as mitosis, is the stage during which the replicated chromosomes, organelles, and cytoplasm separate into two new daughter cells. This phase also includes cytokinesis, which is the process of cell division.