Unit 1.4a Flashcards
1
Q
Why do organisms have signalling molecules?
A
To signal between their cells
2
Q
What type of proteins have binding sites for specific signalling molecules?
A
Receptor Molecules / Target Cells
3
Q
How are cellular responses initiated?
A
By signalling molecules binding and the receptors conformation changing
4
Q
Why do cells produce specific specific signals?
A
So that only cells with the specific receptors receive the message.
5
Q
Why do signalling molecules have different effects on different target cells?
A
Due to differences in intracellular signalling molecules and pathways involved.
