Communication and Signalling (a) Co-ordination Flashcards
1
Q
Multicellular organisms signal between cells using…
A
Extracellular signalling molecules
2
Q
- Receptor molecules of target cells are…
A
Proteins with a binding site for a specific signal molecule
3
Q
- Binding changes the conformation of the receptor, which…
A
Initiates a response within the cell.
4
Q
- Different cell types produce…
A
Specific signals that can only be detected and responded to by cells with the specific receptor.
5
Q
- In a multicellular organism…
A
Different cell types may show a tissue-specific response to the same signal.
6
Q
Examples of extracellular signalling molecules include…
A
Steroid hormones, peptide hormones, and neurotransmitters.
7
Q
Signalling molecules may have different effects on…
A
Different target cell types due to differences in the intracellular signalling molecules and pathways that are involved.
