Cell-cycle controls, Biology

Assignment Help:

• Cancer cells do not respond normally to the body's control mechanism.

o They divide excessively and invade other tissues.
o If left unchecked, they can kill the organism.

• Cancer cells do not exhibit contact inhibition

o If cultured, they continue to grow on top of each other when the total area of the petri dish has been covered
o They may produce required external growth factor (or override factors) themselves or possess abnormal signal transduction sequences which falsely convey growth signals thereby bypassing normal growth checks.

• Cancer cells exhibit irregular growth sequences

o If growth of cancer cells does cease, it does so at random points of the cell cycle
o Cancer cells can go on dividing indefinitely if they are given a continual supply of nutrients
o Normal mammalian cells growing in culture only divide 20-50 times before they stop dividing.


Related Discussions:- Cell-cycle controls

Phylum mollusca, what is salen and its characterstics

what is salen and its characterstics

Nutrition support for myocardial infarction, Q. Nutrition Support for myoca...

Q. Nutrition Support for myocardial infarction patient? The nutrient requirements of a MI patient vary from time of getting hospitalized in an emergency to the time of getting

Principal categories in classification, Q. Principal categories in classifi...

Q. Principal categories in classification? First of all there is a need to know what classification is? Let us define in simple term. Classification is placing of a plant (or g

Respiration, how respiration takes place in mammls and reptiles

how respiration takes place in mammls and reptiles

What are the chief complaint and patient expectations, Chief Complaint and ...

Chief Complaint and Patient's Expectations It is extremely vital to know what the patient really wants. 1. The chief complaint should be recorded in patient's own words as f

How does the nervous system get information, Q. How does the nervous system...

Q. How does the nervous system get information about the external environment, the organs and the tissues? Information about the conditions of the internal and external environ

List four common exercises you will recommend to a patient, List four commo...

List four common exercises you will recommend to a patient. Common exercises are: - brisk walking - cycling - swimming - playing tennis - dancing - rope skip

Mutual supplementation of protein with legume and milk, Define Mutual suppl...

Define Mutual supplementation of Protein with legume and milk? Improvement of cereal diets with legume and milk proteins: The proteins of poor diets based on different cereals

Bio-insecticides and bio-pesticides, A large number of plants are used for ...

A large number of plants are used for bio-pesticides and bio-fertilizers. Several plant species are used as insecticides against aphids and larvae of insect pests: for insects like

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