apoptosis

Question 1

apoptosis

Answer 1

controlled death of cells within our body which plays an important role in our development

Question 2

necrosis

Answer 2

death of cells through injury disease, whole areas of tissue are effected(infection)

Question 3

stages in apoptosis

Answer 3

1. cell begins apoptosis once separated from other cells
2. collapse of cells cytoskeleton
3. cell shrinkage
4. breakdown of organelles and nucleus
5. blebbing of plasma membrane
6. budding of plasma membrane-bound vesicles called apoptotic bodies then phagocytosis

Question 4

errors in apoptosis

Answer 4

to much apoptosis can result in neurodegenerative disease, as cells die that are not meant to die
to little apoptosis can result in
cancer and uncontrolled cell division and the subsequent development of a tumour.

Question 5

mitochondrial (intrinsic) pathway

Answer 5

the pathway of apoptosis which
is initiated by the detection of internal cellular damage

Question 6

death receptor (extrinsic) pathway

Answer 6

the pathway of apoptosis which is initiated by the reception of extracellular death signalling molecules