The Link Between Cancer and Mitosis
Cancer is one of the most common diseases in the developed countries,
accounting for around one in four deaths. In Britain it caused about
25% of the deaths h in 1991 and is the most common cause of death
following cardiovascular disease. There are, in fact, over 200
different forms of cancer, which is why it is not necessarily thought
of as a single disease. For example, breast cancer is the most common
form in women and lung cancer in men.
Cancers are a result of uncontrolled mitotic cell division, which is
the division of one cell to produce two genetically identical daughter
cells. The problem is cased by mutations or abnormal activation of the
genes which control cell division. We can say that a gene has been
mutated if there is a change in one of the bases; for example, one
base turns (e.g. adenine) into another base (e.g. thymine). This can
lead to uncontrolled cell division. When genes are abnormal (or have
been mutated) they are called oncogenes (onkos means tumour), about a
hundred of which have been discovered. Cancerous cells will divide
uncontrollably and repeatedly forming clones of genetically identical
cells. Therefore, thought the mutation may start off in only one cell,
it can be passed on to the cells decedents, so the daughter cells will
too have the mutated gene. Eventually an irregular mass of relatively
undifferentiated cells called a tumour is formed. By the time a tumour
is detected it may contain about a thousand, million cells, which show
abnormal changes in shape.
There are basically two different types of tumours- malignant and
benign. Tumour that spread and even...
... middle of paper ...
...t cells. Burkitt's
lymphoma, for example, is caused by a virus and is the mist common
cancer in children in certain parts of Africa. Cervical cancer is an
example of a type of cancer that can be transmitted sexually.
Some people are said to have a hereditary predisposition to cancer,
due to it being common in their families. This provides evidence of a
genetic link. In most cases thought the disease itself is not
inherited but susceptibility to the factors that cause the disease
are. However some forms of cancer do appear to be caused by the
inheritance of a single faulty gene. For example, Retionblastoma,
which is caused by an error in chromosome 13.
It is believe that development of a malignant cancer cell involves
several step and is not cause by just one factor, but more than one
working over several years.
Thus, the high incidence rate is of great public health importance, as it puts increasing strain on the health system and wider sectors, and generates considerable morbidity.
"FASTSTATS - Leading Causes of Death." Centers for Disease Control and Prevention. Web. 18 Mar. 2010. .
The incidence rate for children between 0 and 19 years old was 5.13 per 100,000. For adults over 20 years of age, the incidence rate was 26.8 per 100,000. The rate was higher in females (22.3 per 100,000) than males (18.8 per 100,000).
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.
The United States has the highest binge drinking percentage worldwide, 5,000 people under the age of 21 die each year due to alcohol poisoning. Also, 15.8 % of underage males and 12.4 % of underage females engage in binge drinking. Binge drinking has become a culture in the United
In comparison, the leading cause of death from heart disease (covering all heart problems combined) causes 1 out of every 4 Americans deaths, or 25% (Centers for Disease Control and Prevention, 2015).
death among young adults. One in every five American parents personally knows a child that has
Global health risks: mortality and burden of disease attributable to selected major risks. (2009) WHO Library Cataloguing-in-Publication Data
There are roughly forty-five murders perpetrated in the United States every [single] day. Most deaths are caused by infectious and parasitic diseases, ischemic heart diseases, HIV/AIDS, murders, cancers, and more. In 2011, a study was conducted exposing the amount of deaths in different age groups in America, revealing that about 39,798 people that are in between the ages of 1-14 years old die, while for people that are 15-34 years old have the death rate of 76,159, also 268,315 die in between the ages of 35-54, while lastly, 673,656 people die at the ages of 55-74 years old. Obviously, you can see how high the death rates are in America in general. Some people wonder why such violence and evilness takes place in our world, but there will always be no right answer to the question because no one knows themselves.
Cancer develops when cells in a part of the body begin to grow out of
cell will look just like any other 'normal' cell although this is far from the
...en 4,500 and 7,000 deaths. A survey in Lombardy gave a rate of 4.9% of patients in 2000.
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
Over two thirds of deaths in each year among estimated yearly deaths are due to non-communicable diseases such as cardiovascular disease, hypertension, diabetics, cancer and upper res...
According to the American Cancer Society, there will be approximately 1,655,540 new cases of cancer in 2014 along with 585,720 cancer deaths in the U.S. This means that is the second most common cause of death behind Heart Disease. Brain Cancer is not one of the most common forms of cancer but if diagnosed it can quickly become a killer.