Short Essay On Cell Cycle

The Cell Cycle is one of the most important thing that happens in a human, animal, or plants body. Even the smallest mistake like an extra chromosome can cause the biggest and deadliest problems for the person, like Cancer and other deadly diseases.

The Cell Cycle consists of three separate units the names of these three units is Interphase, Mitosis, and Cytokinesis. Interphase is the period of the cell cycle between cell divisions. The unit interphase consists of three phases the three phases are G1 phase, S phase, and G2 phase. G1 phase is when cell growth first starts, the cell increases in size, and the cell prepares to copy DNA. The second phase S phase is when the DNA’s instructions are being replicated. The third and last phase of interphase

is G2 phase in this stage the cell continuously grows, this phase is also the start of cell division in mitosis unit of the cell cycle.
Mitosis is the second unit of the cell cycle this unit consists of four phases the four phases are Prophase, Metaphase, Anaphase, and Telophase.

The first phase Prophase is when the DNA coils firmly and becomes visible as a chromosome, next the nuclear membrane and the nucleolus disappears, then the centrioles migrates to the poles, and lastly the spindle begins to finally form. The second phase Metaphase is when the spindle fibers from the centrioles attach to each of the chromosomes, the last thing that happens in this phase is the cell prepares to separate its chromosomes. The third phase Anaphase is when the chromosomes start to separate, the last thing Anaphase does is that the spindle fiber is shortened so the chromosomes can be pulled to the ends of the cells. The last phase in the Mitosis unit of the cell cycle is Telophase in this phase the separation of the chromosomes is complete, the nucleus and nucleolus reforms, then for plants the cell plate forms, and for animals the cleavage furrow forms. The last unit Cytokinesis does not have any phases but is just as important as the others, the first thing that occurs is that the cytoplasm pinches off in the center, lastly two identical daughter cells are

formed.
The cell cycle may be disrupted by three things viruses, genetics, and environmental influences. For example, the disease Cancer is caused by a defect in the genes that controls cell growth and division. Cancer is an illness that cells grow uncontrollably and without stop, There are some treatment for Cancer one is a surgery that removes the localized tumor, the second one is radiation which directly destroys the Cancer cells DNA, and the third one is chemotherapy which either kills the Cancer cell directly like radiation or slows the progress of the Cancer cells down. But to actually control cell division you need have cell cycle regulators, use cyclin, have internal regulators, or external regulators.