Cell Cycle Overview

Study Notes

Cell Cycle Overview

The cell cycle consists of a series of events where a cell grows, prepares for division, and divides into two daughter cells.
Interphase constitutes approximately 90% of the cell cycle duration.

Interphase

Comprises three main sub-phases: G1, Synthesis Phase, and G2.

G1 Phase

Known as the first growth phase.
The cell undergoes significant growth and prepares for DNA synthesis.

Synthesis Phase

Characterized by DNA replication, where each chromosome is replicated, ensuring genetic material is doubled.

G2 Phase

Described as the second growth phase.
The cell prepares for mitosis, ensuring it has sufficient components and energy for cell division.

M-Phase (Mitosis)

Represents the phase where mitosis occurs, encompassing four distinct stages: Prophase, Metaphase, Anaphase, and Telophase.

Prophase

In this phase, chromosomes become visible as they condense, and the mitotic spindle begins to form.

Metaphase

Chromosomes align in the middle of the cell, attached to the spindle apparatus at their centromeres.

Anaphase

Chromatids of each chromosome are split apart and move toward opposite poles of the cell, ensuring each new cell will receive equal genetic material.

Telophase

During this stage, the nuclear envelope reforms around each set of separated chromosomes, resulting in two nuclei within the cell.

Cytokinesis

The final process where the cytoplasm divides, leading to the formation of two distinct daughter cells, each capable of entering its own cell cycle.

Description

Explore the critical stages of the cell cycle, including Interphase, G1, Synthesis, G2, and M-phase. Understand the processes of growth and division that lead to the formation of new cells. This quiz covers key concepts and important phases of the cell cycle.