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What repairs dna chapter 16 ap bio
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Introduction The body is composed of cells. Normally, these cells divide at a composed and calculated manner. If cells die or are destroyed, the body creates more cells through the division of existing cells. However, occasionally, problems with some cells in the body may occur. 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. (American Cancer Society, 2012) The purpose of this paper is to describe the diagnosis and staging of cancer, complications of cancer, the side effects of the cancer treatment, and methods to lessen the physical and psychological effects of cancer. Diagnosis and Staging of Cancer Cancer staging “…describes the severity of a person’s cancer based on the size and/or extent (reach) of the original (primary) tumor and whether or not cancer has spread in the body.” Staging allows doctors and other medical professionals to accurately understand how far along the patient is in the illness and what treatment, medication, and c... ... middle of paper ... ... a healthy lifestyle, which can also be used to treat the physical effects of cancer. Methods to lessen the psychological effects of cancer include “psychotherapy, support group therapy and antidepressant medication” (Cancer Complications, n.d.). Because cancer is such a painful illness that has many negative implications on the patient and those who are involved, many who have cancer tend to feel depressed and alone. With the support of fellow cancer patients and survivors, the pain of such a situation can be lessened. Conclusion In conclusion, cancer is a disease that has impacted millions of people throughout history and the world. With the assistance of medical professionals; early, professional, and accurate diagnosis, treatment, and mental/ emotional support of family members, friends, and doctors, the emotional impact of cancer can become much more bearable.
Whether it’s you or a loved one who has cancer, counseling can help address the emotional aspects of the disease. Our oncology counselors are trained to help you process the “new normal” by addressing role changes, identifying fears and anxieties, and teaching effective coping techniques. Counseling is also helpful for family members coping with a cancer diagnosis so that everyone has a place to talk about the feelings and emotions that go along with cancer. Our counselors can also help you communicate with your treatment providers and help create a plan to navigate your diagnosis and treatment.
..., 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?").
Recently nine studies were done with cancer patients to show improvements on sleep quality, mood, stress, cancer-related distress, cancer related symptoms, and the patients over-all quality of life. One
In this paper we will be discussing cancer and how a holistic approach may be a more viable alternative to traditional therapies, in treating the whole patient. We will look at alternative therapies, in conjunction with medical advances, and see how these practices offer patients fewer debilitating side effects, higher rates of success, and a greater quality of life as compared to conventional medicine (CM)
Cancer is a method by which normal cells of the body mutate and develop quickly into abnormal cells. As early as the 1880s, the only method of treatment of cancer was a radical surgery. This same method of treatment continued into the 1980s. Before chemotherapy, people were treated with comfort measures, meaning they were given drugs to help relieve the pain until they died. Also, before the 1950s, if you were admitted into a hospital with a cancer that could not be treated with surgery, it was understood you were there to die. In the beginning of the 20th century, treatment for cancer consisted of removing small cancers and those that were easily removed by surgery. Later on, radiation therapy was used to prevent the growth of those tumors that were not removed during surgery; then, chemotherapy was used to remove even smaller tumors that could not be removed by surgery or treated by radiation.
Cancer is a deadly disease that millions of people die from a year. Many loved ones are killed with little to no warning affecting families across our world. My family happened to be one that was affected by this atrocious disease. This event changed the way my family members and I viewed cancer.
A cancer diagnosis can significantly change your life and the lives of your family in various ways. Hearing the news “you’ve been diagnosed with cancer” leave patients and their families in a whirlwind of emotions. The initial shock of this diagnosis leaves feelings of sadness, denial, frustration, confusion, fear, anger, and often times the “why me?” feeling. Thoughts start going through your head regarding how this affects yourself, your family, and your everyday life.
The oncologist (cancer specialist) have discovered some solutions to against those cancer. Prevention and treatment. Prevention means patient can discovered their cancer in an early stage by doing a various diagnosis to detect the present of a tumour in our body. The routine self-exam or screening measures eventually also can detect some cancer that in an ...
Each stage is characterized by an A, B, or C letter, depending on the degree to which the symptoms present themselves. The differences in each stage are as follows: stage 1 is when the cancer is either found in one ovary or both, stage 2 the tumor is found in one or both ovaries and extends to other pelvic structures, stage 3 the cancer has spread beyond the pelvis to the lining of the abdomen or to the lymph nodes and finally in stage 4 the cancer has spread to other organs in the body including the liver or lungs (Ovarian Cancer National Alliance). Cancer is “staged” by taking a sample of the infected tissue surgically and sending it to a lab for examination. Staging is crucial in order for medical professionals to determine which course of treatment would be the most effective for the given patient. If misdiagnosed, an entire area affected by this disease could potentially be missed and left untreated.
There are over 13.7 million cancer survivors in the US today, and over 1.5 million people will be newly diagnosed this year. Over the last several years that has been substantial progress in cancer treatments resulting in increased life expectancy. While certainly desirable, the dynamic has changed to more people are now living with cancer as a chronic illness. All of these individuals face a series of complex decisions related to their care that include screenings, treatment choices, and the financial challenges of cancer care. Yet less than one third of all people facing cancer receive appropriate counseling and support. A 2008 Institute of Medicine (US) Committee noted that: “The remarkable advances in biomedical care for cancer have not been matched by achievements in providing high-quality care for the psychological and social effects of cancer. Numerous cancer survivors and their caregivers report that cancer care providers did not understand their psychosocial needs, failed to recognize and adequately address depression and other symptoms of stress, were unaware of or did not refer them to available resources, and generally did not consider psychosocial support to be an integral part of quality cancer care.” (Institute of Medicine 2008)
Most cancer happens at different rates in other parts of the world. Lifestyle can increase a person’s risk for cancer because it can affect cells that are prepared to become cancerous by helping them grow. The environment can change genes which cause them to be cancerous in the first place. An abnormal cell is what causes a tumor. This cell appears to be no different from normal ones and only functions and divides when needed. Then, even though the organ it supports has a sufficient amount of cells, it divides uncontrollably (Weinberg 1-2).
Not only does cancer have an emotional impact on the individual, but family caregivers can have an emotional
Tumors are formed by the alteration of the body’s own cells. This can be caused by environmental factors such as radiation, like UV exposure, chemicals or viruses 1. These can disrupt genes that control growth and cause an increase in cell division and proliferation. Proto-oncogenes are those genes that control normal but essential cell processes that keep cell growth and death in check. Two important categories are apoptosis genes, which regulate cell death, and tumor suppressor genes, which decrease cell propagation 1 . If these genes were mutated to the point where they cannot produce a functioning protein, cell division would continue far past what it was supposed to and unhealthy cells would be allowed to live and continue to multiply. This is what creates a malignant tumor. Certain conditions in the body can also promote the growth of cancer cells. One of these is a deficiency of natural killer (NK) cells, which are able to kill cancer cells by creating a pore in the cell membrane with perforin and releasing granzymes into the cell. Low levels of perforin allow for tumor growth 1. Chronic inflammation can also ...
Many people have been affected all around the world whether it was a family member or theirs self. Cancer has been looked upon as something disastrous by today’s society. The numerous forms of cancer are sporadic and diverse. The disease requires minimum amount of effort to gain control of one’s body. The processes of how a patient comprehends with cancer treatments delivers a sorrow feeling to the patient’s family and friends; however, cancer can be treated as well as prevented through certain strategic methods.
Cancer is related to the cell cycle because if a cell does not meant the checkpoint requirements and still continues through the cycle, it will become uncontrollable. During the synthesis stage of interphase, while the DNA should be replicating, an error can occur, which will lead to a mutated cell. Proteins that control transcription are often the cause because of the changed sequence. This one mutation can lead to an army of mutated cells. These cells can lead to tumor development and cancer. The P53 is a gene that codes for a protein that suppresses tumors. A tumor suppressor is a gene that protects a cell from one step on the path to cancer. It is extremely important in helping kill cells that could become cancerous. If there is a mutation to this gene, it will stop protecting you from cancer. Proto-oncogenes code for positive cell cycle regulators, but when mutated, turn into oncogenes, or genes that have the potential to become cancerous. Cancerous cells lose their specialized functions and produce more quickly. They ignore signals that tell them when to start and stop dividing. Eventually, they can take over tissues and grow without being regulated. Cancer cells have insufficient internal regulators and also cannot program cell death among mutated cells, this process is called apoptosis. When cancer cells don’t die, they keep dividing instead which can produce tumors, masses of rapidly dividing cells that can damage surrounding tissues. When cancer moves into other parts of the body and forms secondary tumors, it is called metastasis. Tumors that develop can be malignant, cancerous and invade and destroy healthy tissue, or benign, noncancerous and does not invade any other part of the body. Sometimes, cancerous cells can break away from a tumor and enter the bloodstream, which allows them to travel throughout the