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2006-07-01 04:46:37 · 13 answers · asked by Erene K 1 in Science & Mathematics Biology

13 answers

1. atypical cell growth [uncontroled and disorganized]
2. growth in multiple layers
3. tumor growth results which distroys normal tissue.
4. This new growth, termed neoplasia, is made up of cells that are disorganized, a condition termed anaplasia.
5. To support their growth, cancer cells release a growth factor that causes neighboring blood vessels to branch into the cancer tissue.

2006-07-01 04:58:16 · answer #1 · answered by loligo1 6 · 0 0

Cancer cells have a lot of mutations in their DNA leading to the following.

1.Normal cells will undergo programmed cell-death (apoptosis) if they have accumulated too many damages in their DNA.
In cancer cells this mechanism is compromised and thus the cells, although they have a lot of mutations don't self-destruct.

2. Normal cells replicate only upon stimulation by growth factors and can divide only a cetrain number of times. Cancer cells can divide indefinetely and without the need for a hormone signal.

3.Once cancer cells start forming a tumor they secrete molecules which promote the formation of blood vessels so that all the cells in the growing tumor can have access to nutrients.

4.At a certain point the cancer will become metastatic; cancer cells change their connections with other cells and secrete enzymes which destroy the material that is between the cells (extracellular matrix). This way they can travel inside the body and create tumors at different locations.

2006-07-01 05:46:56 · answer #2 · answered by bellerophon 6 · 0 0

Cancer cells mutations in either tumor supressor genes or proto-oncogenes. A mutation in a tumor suppressor gene is like having the brake malfunction in a car...it normally stops abnormal growth but it no longer can stop the progression. A mutation in a proto-oncogene is like having the gas pedal stuck down...it normally tells the cell to divide but if it gets stuck, the cell will keep dividing. Cancer cells also have lost the quality of senscence...in other words, they will not age and die from age...thus cancer is, on the cellular level, the fountain of youth. Cancer cells also have lost contact-mediated cellular division which means they normally only grow and divide if there is room to divide. Cancer cells divide regardless of the space available. There are many more characteristics but these are some of the easiest to explain. I hope this helps!

2006-07-01 05:14:11 · answer #3 · answered by embem171 4 · 0 0

To start with - I feel when you liken bestiality with homosexuality you then might have some stressful disorders. Secondly, if sex had been just for reproduction we'd not be spending rather a lot time heading off pregnancy. We additionally would no longer want to have sex after we were probably not to conceive, or had conceived. Definitely many women consider very pro-sex when they are pregnant or when they're having their intervals. Additionally, once women had passed through the menopause they would not ever have intercourse over again, which in spite of what you can even suppose, quite simply isn't actual. They almost always consider more free and confident of their intercourse lives as quickly as the threat of being pregnant has lengthy long past, when youngsters have long long gone, and, they bear in mind extra positive of their own skins. If we all bred willy-nilly, we could have even more starvation, wars and competitors for scarce assets than we've already got. So it's good that we attempt to manage our possess fertility and that for the reason that of their nature, others are much less inclined to breed. Prior to now, people regularly had to lodge to more extreme method to control their families, ie infanticide. The truth that we are in a position to advantage from the bonding that a good sexual relationship brings with out given that the truth that another mouth to feed is designated. There may be nothing flawed with homosexuality or heterosexuality if any sexual acts worried are between consenting adults and no injury is caused to both social gathering. Bestiality can't be recounted to contain the consent of the animal and usually the animal just isn't ready to exhibit its refusal, hence it is abusive and cruel and can need to now not be tolerated.

2016-08-08 23:25:58 · answer #4 · answered by nikkel 2 · 0 0

A cancerous cell is any cell that reproduces rapidly and exploits many resources needed by the body. The cancerous cell usually has no function or loses the ability to perform the assigned function. Many cells are "programmed" to undergo apoptosis once they become unable to perform their required function; the ones that don't usually develop into malignant tumors (although some can be benign).

2006-07-01 16:40:52 · answer #5 · answered by Anonymous · 0 0

The main characteristics of a cancer cell are the lost of function and that its can continue to replicate forever. A normal cell can only replicate for a finite amount of time until it dies off. A cancer cell keeps on replicating until it takes over.

2006-07-01 04:52:35 · answer #6 · answered by Anonymous · 0 0

Well cancer is the rapid reproduction of cells. The divide 4 times as fast as normal cells. Thats when tumors form. If the tumor reaches the blood, the cancer can metastisize (sp?), or transport to another part of the body.

2006-07-01 04:51:25 · answer #7 · answered by #Reistlehr- 4 · 0 0

First of all - I feel whilst you liken bestiality with homosexuality you then would have a few stressful problems. Secondly, if intercourse have been just for copy we could now not be spending plenty time keeping off being pregnant. We moreover could now not desire to have intercourse when we had been not really to conceive, or had conceived. Absolutely many females recall very professional-intercourse whilst they're pregnant or whilst they are having their periods. Also, as soon as women had handed through the menopause they would never have intercourse all over again, which irrespective of what you may additionally feel, simply is not actual. They as a rule feel extra loose and positive in their sex lives as quickly because the hazard of pregnancy has lengthy long past, whilst besides the fact that children have lengthy long past, and, they recall additional optimistic in their possess skins. If all of us bred willy-nilly, we would have much more starvation, wars and opponents for scarce assets than we have now already obtained. So it's well that we try to manipulate our own fertility and that on the grounds that in their nature, others are much less inclined to breed. Up to now, men and women sometimes needed to inn to extra extreme technique to manage their households, ie infanticide. The fact that we're competent to advantage from the bonding that a well sexual dating brings without seeing that the truth that yet another mouth to feed is distinctive. There could also be not anything flawed with homosexuality or heterosexuality if any sexual acts concerned are among consenting adults and no harm is induced to each occasion. Bestiality can't be recounted to contain the consent of the animal and most likely the animal isn't competent to show its refusal, therefore it is abusive and cruel and can have got to now not be tolerated.

2016-08-20 10:21:12 · answer #8 · answered by ohrmund 4 · 0 0

The simplest term to answer this question is to say that cancer cells far exceed the rate of new cells created, versus old cells dying.

2006-07-01 05:24:17 · answer #9 · answered by Peter B 1 · 0 0

cancer cells are most fast growing cells
they divide 4 times faster than normal cell

2006-07-08 00:19:23 · answer #10 · answered by Anita S 1 · 0 0

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