Cell Signalling Flashcards
1
Q
When cells can be signalled by the same cell
A
Autocrine
2
Q
When cells are signalled by nearby cells
A
Paracrine signalling by cytokines
3
Q
Cell signals can be
A
- hormones
- chemical elements
- light
- heat
- water
4
Q
Signalling systems can…
A
- warn off pathogens and/or infection
- alter/regulate metabolic processes
- switch on or off
5
Q
Ways cells can respond to molecules
A
- on the surface of the cell
- via intracellular receptors
6
Q
Intracellular receptors
A
- some hormones - lipid soluble
- intracellular receptor binding
- steroid hormones, thyroid hormones, vitamin D3, vitamin A, oestrogens, androgens
7
Q
What are some responses of cell signalling
A
- change metabolism of the cell
- change electrical charge across membrane
- change in gene expression
