cell signalling and hormones Flashcards
1
Q
why are cells constantly communicating
A
to maintain cellular integrity
2
Q
autocrine
A
when cells are signalled by themselves
3
Q
paracrine
A
when cells are signalled by nearby cells
4
Q
endocrine
A
cells signalled by distant multi-cellular organisms (signalling by hormones)
5
Q
examples of cell signals
A
hormones
chemical elements
light
heat
water
6
Q
what can signalling systems do
A
warn off pathogens/infection
regulate metabolic processes
switch on or off
7
Q
what are some cell responses
A
change in metabolism of the cell
change in electrical charge across membrane
change in gene expression
