Which type of protein plays an important role in transmitting signals in the nervous system? (Points : 1)
ion channel membrane proteins
keratin
cytochrome p450
insulin

Question

Which type of protein plays an important role in transmitting signals in the nervous system? (Points : 1) 
       ion channel membrane proteins
       keratin
       cytochrome p450
       insulin

anonymous · Answer

insulin

anonymous · Answer

It has to be "ion channel membrane proteins". Their opening or closing leads to changes in membrane potential which conducts information over an axon or at synapses. Keratine is a protein (e.g. in hairs), insulin plays an important role in blood sugar regulation und cytochrome p450 must be an enzyme involved in oxidation processes.