Chap 5 Flashcards
What’s apoptosis?
Programmed cell death that decreases the number of cells
جنين
Embryo
What does somatic mean?
Related to body
What’s the enzymes that brings about apoptosis?
Caspase
What are the two sets of caspases?
- initiators
2. executioners
What’s the role of internal signals in control of cell cycle?
They make sure the stages follow each other in normal sequence
and that each stage is completed before the next stage begins.
What’s the role of external signals in controlling cell cycle?
They tell the cell weather or not to divide.
What’s the protein that increases and decreases as cell cycle proceeds ?
Cyclin
DNA damage can stope cell cycle at
G1 S or G2?
G1
What’s the protein that brings that stops cell cycle if DNA is damaged?
P53
At what stage cell cycle stops of chromosomes are not to be distributed accurately to the daughter cells?
M stage
What type of genes promote cell cycle and prevent apoptosis?
Proto-oncogenes
Which type of genes stope cell cycle and promote apoptosis?
Tumor suppressor genes
When a tumor is surrounded by a fibrous capsule, it’s called…
Benign tumor
The cells of …tumor don’t resemble normal cells and are able to invade surrounding tissues
Malignant
