Causes of cancer, Biology

Assignment Help:

Causes of Cancer

Scientists have identified the cellular genes that code for those proteins which jointly control and regulate cell growth and division. These  genes are of two broad categories proto  oncogenes and tumor supprerssor genes. Any change i.e. mutations in these genesparticularly in the proto oncogenes, shatters the cellular controls over growth and division rendering the concerned cells carcinogenic. A mutated proto oncogene is called oncogene.

Mutations in proto oncogenes and other related genes may occur spontaneously due to a variety of factors originating in the cells themselves. These may also occur due to physiological disorders   in the body beside this, certain external environmental factors have alsobeen indentified as carcinogenic mutagens. It has been found that incidence of cancer increases in a population exposed to ionizing radiations (X-rays, gamma rays and ultlraviolet rays )  and certain chemicals such as those present in chimney smoke. Chemical present in cigarette smoke such as vinyle chloride, benzopyrenes and nitro so nor nicotine, are known to cause lung cancer.     


Related Discussions:- Causes of cancer

Explain the simple interrupted technique of suturing, Simple interrupted te...

Simple interrupted technique of Suturing The simple loop is the most commonly used technique in dentistry and is routinely used to adapt tension free, mobile surgical flaps.

Why is pattern baldness more common in men than in women, Why is pattern ba...

Why is pattern baldness more common in men than in women? Pattern baldness is handled by the allele B. Testosterone interacts with the heterozygous genotype (BB′) to make baldn

Determine the type of bandage, Determine the type of bandage The most com...

Determine the type of bandage The most common type of bandage is the gauze bandage, a simple woven strip of material which comes in different widths and lengths.

Explain about the herbal of valerius cordus, Explain about the Herbal of Va...

Explain about the Herbal of Valerius Cordus? The Herbal of Valerius Cordus published posthumously in 1561; contained not only medicinal plants found in Germany and Italy, but

State about electric field lines, State about Electric Field Lines Ele...

State about Electric Field Lines Electric Field Lines (lines of force) - show direction of force on a positive test charge from a distribution of charges.  The electric field

Water stress - responses of plants to stress, Water Stress - Responses of P...

Water Stress - Responses of Plants to Stress Water stress in a plant can result from drought, excess salinity in the soil and very low or high temperatures. It has been found

Things to do before an earthquake for minimizing losses, Things to do-  We ...

Things to do-  We ought to aide by earthquake resisting building codes during construction and retrofitting of existing buildings. We should have a first AID box handy and learn

Explain the absorption and transport of vitamin e, Explain the Absorption a...

Explain the Absorption and Transport of Vitamin E? Absorption of vitamin E from the intestine depends on adequate pancreatic function, biliary secretion and micelle form

What are genetic mutations, What are genetic mutations? The Genetic mut...

What are genetic mutations? The Genetic mutations are alterations of the genetic material (compared to the normal condition of the species) involving modifications in the norma

What happens to pepsin when it passes into the duodenum, Q. Since pepsin is...

Q. Since pepsin is a gastric enzyme does it have a basic or an acid optimum pH? What happens to pepsin when it passes into the duodenum? Pepsin acts contained by the stomach so

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd