Different Types Of Cell Cycle - 1293 Words

Chapter five primarily covers information about cells, cell division, and the different types of cell cycles. The cell cycle is a sequence of events that makeup the life of a typical eukaryotic cell, from the moment of its origin, to the time it divides to produce two daughter cells. Interphase starts off the cell cycle and it is the longest stage in the cell cycle. Most cells spend 90% or more of their life span in interphase. Interphase is divided into three main phases-G0, G1, S, and G2 phases. This portion of the cell cycle takes in nutrients; manufactures proteins and other substances, expands in size, and conducts special functions which depend on the cell type. The G1 phase is the first phase in the life of a newborn cell, and is known as the â€Å"gap 1† phase. The S phase is the phase that follows the G1 phase. In this phase, cells that are destined to divide, preparations for cell division begin during the S phase. The â€Å"s† in this phase stands for  "synthesis†. This phase is responsible for replication of the cell’s DNA, and this is one of the most important responsibilities performed in this phase. G2 phase occurs after the S phase but before the start of cell division. The G2 phase is known as the â€Å"gap 2† phase. The G1 phase, S phase, and G2 phase, each make up the parts of interphase. Cell division is the last stage in the life of an individual cell. As cell division begins, the cell contains twice the amount of DNA because of DNA replication in the S phase. The G0Show MoreRelatedBiology: Cell Division Cycle Essay1583 Words   |  7 Pagesparticular cell-division cycle. All organisms are constantly dividing and growing throughout their life time. The cell-division cycle in eukaryotes is a complex process that involves cyclins, cdks and multiple checkpoints that eventually lead to cell division. There are two different types of cell division which are Meiosis and Mitosis. Meiosis is the type of cel l division which involves gametes or sex cells that are involved in sexual reproduction. This type cell division produces 4 different haploidRead MoreSymptoms And Treatment Of Cancer1432 Words   |  6 Pagesof drug to treat a disease, but today, it is most used in a cancer context. These drugs can also be known as cytotoxic (i.e. cell-killing) drugs or as antineoplastic (i.e. anti-cancer) drugs. But what is this complex disease called cancer? Cancer is a multi-step process mainly characterized by uncontrolled cellular growth and proliferation. Chemotherapy is very different from other cancer treatments, such as surgery or radiotherapy. One of the main reasons for this is, although chemotherapy canRead MoreEssay on Analysis of Treatments for Cancer1411 Words   |  6 Pages      Ã‚  Ã‚   Cancer is a disease in which cells multiply out of control and gradually build a mass of tissue called a tumor. There has been a large amount of research dedicated to the treatment and cure of cancer. Several types of treatments have been developed. The following are just some of the major examples of cancer therapy: surgery, chemotherapy, radiation therapy, biologic therapy, biorhythms, unconventional treatments, and hyperthermia. Each type of treatment is discussed in detail belowRead MoreHaha631 Words   |  3 PagesChapter 12: The Cell Cycle Reading guide Overview: 1. What are the three key roles of cell division? State each role, and give an example. 2. What is meant by the cell cycle? Concept 12.1 Cell division results in genetically identical daughter cells 3. What is the meaning of genome? Compare your genome to that of a prokaryotic cell. 4. How many chromosomes are in a human somatic cell? 5. Name two types of somatic cells in your body. 6. What is a gamete? 7. Name theRead MoreTreatments and Drugs for Cancer671 Words   |  3 PagesChemotherapy is a drug, or a variety of different drugs designed to kills cancer cells that have metastasized around the body, shrink primary tumours or slow the growth of tumours (Triggle Hecht, 2010). It is a non-selective cytotoxic drug which target both malignant and normal cells (Craft, Gordon Tiziani, 2011). Radiation and surgery are also treatments, used with chemotherapy to destroy cancer cells in the body (Sugerman, 2013). Chemotherapy is done to shrink a tumour before surgically removingRead MoreCell Cycle Regulation - Genetics1387 Words   |  6 Pages1.  What are the different restriction points of the cell cycle? Describe each. 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