Table of Contents
What is the Cell Cycle?
The cell cycle is the process by which cells divide and reproduce. The cell cycle is divided into four phases: G1, S, G2, and M. In G1, the cell grows and prepares for division. In S, the DNA is duplicated and the cell divides. In G2, the cell grows and prepares for division. In M, the cell divides.
Cell Cycle Interphase
In interphase, the cell’s DNA is duplicated, the cell grows, and the cell prepares for division. The cell cycle is divided into three phases: G1, S, and G2.
Interphase Definition/ What is Interphase?
The interphase is the phase of the cell cycle in which the cell prepares for division. The chromosomes are replicated and the cell grows and prepares for division.
Prophase
In prophase, the chromosomes condense and the nuclear envelope breaks down. The nucleolus also disappears. The chromosomes become attached to the spindle fibers, which are then organized by the spindle apparatus.
Prometaphase
Prometaphase is the first stage of mitosis, or cell division. During prometaphase, the nuclear envelope breaks down and the chromosomes become visible. The chromosomes are then attached to the spindle fibers, which pull them to the opposite ends of the cell.
Metaphase
Metaphase is the stage of mitosis and meiosis when the chromosomes are aligned in the middle of the cell.
Anaphase
: During anaphase, the chromosomes separate and migrate to opposite poles of the cell. This is accomplished by the spindle fibers, which attach to the chromosomes and pull them to opposite ends of the cell.
Telophase
Telophase is the final stage of mitosis, and is also the first stage of cytokinesis. During telophase, the chromosomes decondense and the cell begins to divide.
Cytokinesis
Cytokinesis is the division of a eukaryotic cell into two daughter cells. It occurs after the mitotic phase of the cell cycle, and is brought about by the formation of a cleavage furrow.
Cell Cycle and It’s Regulation
The cell cycle is the process that cells go through to divide and create new cells. The cell cycle is regulated by proteins called cyclins and cyclin-dependent kinases (CDKs). The cyclins and CDKs bind to each other to form a complex that activates the CDKs. The CDKs then activate other proteins that control the cell cycle.
