Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
Process of mitosis essay
Process of mitosis essay
Process of mitosis essay
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Recommended: Process of mitosis essay
What turns good cells bad? It all begins with Mitosis. Mitosis is a normal cell process that most cells undergo. Cancer is a disease that affects millions of people each year. How are these processes connected and why are some cells affected by this process more than others? Mitosis is the division of cells and when they grow uncontrollably, the cells become cancerous. The cells normally spend most of their time in interphase and only divide when they need to, like when the body grows or heals. If cells did not undergo mitosis in which they grow and divide, then we would not grow (Source D). Cells go through certain checkpoints to check if they are growing, and mutating DNA properly. Although, sometimes a cell fails a checkpoint and the
Cell cycle events portray some differences between different living things. In all the three living things, their cells divide, a process referred to as mitosis. The mitosis stage differs and it encompasses four phases. During development, the cell cycle functions endlessly with newly created daughter cells directly embarking on their path to mitosis. Bacteria cells separate forming two cells after every thirty minutes under favorable conditions. However, the eukaryotic cells take quite longer compared to bacteria cells to develop and divide. Nevertheless, in both animals and plants, cell cycle is usually highly regulated to prevent imbalanced and excessive growth. Both animals and plants are known as eukaryotes meaning that their DNA exists inside their cells’ nuclei. Therefore, their cells as well as mitotic processes are similar in various ways (Eckardt, 2012).
In The Immortal Life of Henrietta Lacks, multiple cell research studies involving Henrietta’s cells are described. Author Rebecca Skloot writes about Henrietta Lacks’ journey through her cervical cancer and how her cells changed the lives of millions long after her death. Skloot relates the history of cell research, including those studies which were successful and those that were not so successful. It is necessary for the author to include the achievements and disturbing practices of scientists throughout this history to inform readers and focus on the way Henrietta’s cells were used. Truth always matters to readers and Henrietta’s family deserves the truth.
..., while a cell undergoes cell cycle, when a cell comes in contact with another cell, it stops reproducing. However, cancer cells continue to duplicate repeatedly until there is a mass of cells or a tumor to form (see figure 9). Lastly, in cell division when there is a mutation or abnormality in the DNA, a normal cell stops dividing. However, a cancerous cell will continue to duplicate and form mutations (“Cell Biology and Cancer”). Also, cancer cells are harmful because they grow and duplicate with complete disregard to the functions and limitations of the body (see figure 10). Also, cancerous cells have the ability to spread through metastasis throughout parts of the body through the bloodstream. In terms of similar behavior to that of normal cells, cancerous cells also duplicate, but at a very different rate ("Cancer Cells vs. Normal Cells: What's Different?").
Compare and Contrast Mitosis and Meiosis. Meiosis and mitosis describes the process by which cells divide. either by asexual or sexual reproduction to produce a new organism. Meiosis is a form of cell division that produces gametes in humans.
Cancer is the term used to describe a group of diseases consisting of hundreds of ailments and although there exists so many different types of cancer, they all begin in a similar way. The body is made up of over a trillion cells, and cancer is the uncontrolled growth of malfunctioning cells in the body (Dawson, 1996). “Normal body cells grow, divide, and die in an orderly fashion. During the early years of a person’s life, normal cells divide faster to allow the person to grow. After the person becomes an adult, most cells divide only to replace worn-out or dying cells or to repair injuries” (American Cancer Society, 2012).
Cancer starts when cells in a part of the body start to grow out of control. Cancer cell growth is different from normal cell growth. Instead of dying, cancer cells continue to grow and form new, abnormal cells. Cancer cells can also invade (grow into) other tissues, something that normal cells cannot do. Growing out of control and invading other tissues are what makes a cell a cancer cell. Cells become cancer cells because of DNA (deoxyribonucleic acid) damage. DNA is in every cell and it directs all the cell’s actions. In a normal cell, when DNA gets damaged the cell either repairs the damage or the cell dies. In cancer cells, the damaged DNA is not repaired, and the cell doesn’t die like it should. Instead, the cell goes on making new cells that the body doesn’t need. These new cells all have the same abnormal DNA as the first cell does.
The cell cycle is the process by which cells progress and divide. In normal cells, the cell cycle is controlled by a complex series of signaling pathways by which a cell grows, replicates it’s DNA and divides, these are called proto-oncogenes. A proto-oncogene is a normal gene that could become an oncogene due to mutations. This process has mechanisms to ensure that errors are corrected, if they are not, the cells commit suicide (apoptosis). This process is tightly regulated by the genes within a cell’s nucleus. In cancer, as a result of genetic mutations, this process malfunctions, resulting in uncontrolled cell proliferation. Mutations in proto-oncogene or in a tumour suppressor gene allow a cancerous cell to grow and divide without the normal control imposed by the cell cycle. A change in the DNA sequence of the proto-oncogene gives rise to an oncogene, which
Healthy cells grow and divide in a way to keep your body functioning properly. But when a cell is damaged and becomes cancerous, cells continue to divide, even when new cells aren't...
Usually, normal cells die when they are old or damaged, newly grow cells will replace them. However, if something goes wrong, there may be too many new cells when the body only needs a few of them, and the body can’t get rid of old cells, it builds up a mass of tissue called tumor. There are two types of tumor, begin or malignant. Begin tumors are usually not harmful to human body, however, malignant tumors could be life threatening. This type of tumors will invade organs and tissues around them, travel through blood vessels or lymph vessels, attach to other tissues and destroy them. Malignant tumors arise in breast tissues and cause breast cancer.
Mutations turn genes on and off, activating diseases; all women have a chance of developing breast cancer (Understanding; Breast). Unhealthy cells divide and form a tumor. The tumor can be benign and not dangerous. Malignant tumors can become potentially dangerous (Understanding). The cancer becomes invasive when it spreads to other breast areas. Cancer that has not invaded other breast tissues remains noninvasive; noninvasive cancer can become invasive if not treated (Chen, 2010). If cancer cells get into the lymph nodes, the cells can get into the bloodstream and spread throughout the body (Understanding; Rosen, 2011).
What if your cells don't reproduce or increase in number? What will eventually happen if your arm was wounded by a knife? If cells don't reproduce, how will your arm heal? All living organisms contain cells and in order for them to grow, survive, and eventually reproduce, the cells in their body should be able to multiply. The repair of the damaged parts of different organisms also requires the cells to increase in number in order to replace the damaged ones. The growth of the cells of many organisms generally has 3 main phases; cell division, cell enlargement, and cell differentiation. The types of cell division are usually Meiosis and Mitosis, in which the latter maintains the chromosome number of parent cells to daughter cells. Mitosis is generally divided into five stages; ...
The process of cell division plays a very important role in the everyday life of human beings as well as all living organisms. If we did not have cell division, all living organisms would cease to reproduce and eventually perish because of it. Within cell division, there are some key roles that are known as nuclear division and cytokinesis. There are two types within nuclear division. Those two types being mitosis and meiosis. Mitosis and meiosis play a very important role in the everyday life as well. Mitosis is the asexual reproduction in which two cells divide in two in order to make duplicate cells. The cells have an equal number of chromosomes which will result in diploid cells. Mitosis is genetically identical and occurs in all living
By harnessing this normal cell process, scientists hope to have found an effective way to combat cancer. Cancer is a disease that affects human somatic cells. It causes the cells to divide uncontrollably and form masses known as tumors. There are two different types of cancer tumors. Some tumors are benign, and other tumors are malignant.
These signals are interpreted in nucleus, and the cell reproduce its genetic information, and divide into two identical daughter cells through a process called mitosis. Cancer cells do not obey this rule, and will divide even when they do not receive the proper signal. In addition to the signal that normal cells receive that telling them to divide, they are also told when to stop dividing. This prevent too many cells from being made. In face, this cell division process is a highly ordered process. This is a critical issue in cancer, because cancer cells do not obey or require normal signals for division. This could lead to the formation of mass of cells that piles up that may form a tumor. Also different from nomad cells is the ability of cancer cells to divide indefinitely. A important point about cells is that no matter what their job is in a body, they all have the same general structure that they all have different kinds of organelles that play different important functions for the cell. Of particularly important for cancer is the organelle known as the nucleus. The nucleus contains the blueprint of information for each and one of us just as a manual would contain the instruction for a chair. Specifically, this information is contained in the chromosomes that reside in the nucleus. Individual unit of informations are called genes. At a chemical level, genes are made of
What is the cell cycle? It’s the way we reproduce. A series of events lead up from the beginning that which gives them life to the splitting of cells, The separate steps make up this very important process. Without the division of cells, we simply would not be here today.