Cell Signalling Flashcards
0
Q
Why is signalling necessary
A
- stay in contact with environment and adjacent cells
- communication with cells over 1m a part
1
Q
What is cell signalling
A
Communication between cells by means of chemicals
2
Q
Process of cell signalling
A
Chemical signal attaches onto complementary receptor molecule
Triggers a response and change in cell
3
Q
Why are there vast amounts of receptor molecules
A
Made of proteins
Chains if amino acids
Endless variations of amino acid sequence
4
Q
How are signals transported
A
Mass transport (blood stream)
Simple diffusion
Electrical impulses
5
Q
How is insulin used in cell signalling
A
Secreted by beta cells
Binds to complementary target cell in liver/ muscle
Internal response
Change in cells take up of glucose
