What is apoptosis what is its purpose?

What is apoptosis what is its purpose?

(A-pop-TOH-sis) A type of cell death in which a series of molecular steps in a cell lead to its death. This is one method the body uses to get rid of unneeded or abnormal cells. The process of apoptosis may be blocked in cancer cells. Also called programmed cell death.

Do cancer cells undergo apoptosis Why or why not?

Cancer cells can ignore the signals that tell them to self destruct. So they don’t undergo apoptosis when they should. Scientists call this making cells immortal.

What is the purpose of apoptosis quizlet?

– Apoptosis eliminates damaged cells, especially those possessing DNA damage that can result in cancer.

In which scenario would a cell undergo apoptosis?

Generally, when do cells undergo apoptosis under pathologic conditions? When cells have DNA or mitochondrial damage beyond repair.

Why is apoptosis considered a clean cell death quizlet?

-in apoptosis, the cells vaculoate or bleb, in which they condense their chromatin for digestion. -the apoptotic body is then disposed by phagocytosis, this is a clean death. -when this is compared with necrosis, the cells spill their contents which is not clean. why does the cell commit suicide?

Which cell part plays a role in apoptosis quizlet?

– In cells targets for apoptosis, Cytochrome C is released into the cytoplasm to initiate apoptosis. – Released from mitochondria as a result of channels formed in the membrane by 2 members of a large family of proteins, called Bax & Bak.

Why must apoptosis be tightly regulated?

It is clear that apoptosis has to be tightly regulated since too little or too much cell death may lead to pathology, including developmental defects, autoimmune diseases, neurodegeneration, or cancer.

Why would apoptosis be beneficial to a cell?

Apoptosis is a way for the body to keep checks and balances on the natural cell division process of mitosis or continued cell growth and regeneration.

What are some reasons why cells undergo mitosis?

Cells undergo mitosis for three main reasons: -To repair and/or replace old or damaged cells. -During periods of cell and tissue growth. -When the body needs exact replicas/copies of cells e.g. hair cells and blood cells.

How could a cancerous cell evade apoptosis?

Apoptosis is the opposite of cell growth; it is cell death. To divide and grow uncontrollably, a cancer cell not only has to hijack normal cellular growth pathways, but also evade cellular death pathways. Indeed, this acquired resistance to apoptosis is characteristic of all types of cancer.

Why do cells undergo mitotic cell division?

The major purpose of occurrence of mitosis is growth and repair. Some of the cells in the body do not undergo cell division like nerve cells and muscle cells. These cells are matured enough that they cannot grow again or undergo repair.