Biochemistry revision: Signalling

HideShow resource information

1. The similarity in structure of G proteins across a diverse selection of organisms suggests

  • G proteins evolved very early
  • G proteins were in bacteria, that were eaten by eukaryotes
1 of 16

Other questions in this quiz

2. A secreting cell acts on nearby target cells by discharging molecules of a local regulator into the extracellular fluid

  • Synaptic signalling
  • Paracrine (local)
  • Endocrine signalling (long distance)

3. ________ is the detection of a signalling molecule coming from outside the cell, this occurs when the molecule binds to the receptor protein on the cell surface membrane

  • Response
  • Reception
  • Transduction

4. Ligand gated iron channels contain a region that acts as a gate, when a ligand binds, the gate opens or closes

  • True
  • False

5. A _____________ is a cell surface transmembrane receptor that works with the help of a G-protein, which binds to the energy rich GTP

  • Receptor tyrosine kinases
  • G protein coupled receptor
  • Ligand gated receptor

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all signall resources »