Protein characteristic of the postsynaptic membrane. In a chemical synapse, the postsynaptic membrane is the membrane that receives a signal (binds neurotransmitter) from the presynaptic cell and responds via depolarisation or hyperpolarisation. The postsynaptic membrane is separated from the presynaptic membrane by the synaptic cleft.
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Below is a list of toll free 800 numbers for TurboTax. Customer Service: 1-866-888-2402. 1  Thank you for calling TurboTax, I will help connect you to the best experts to answer your question.2  If you need help purchasing your TurboTax or want to check on the status of an order press one. If you are trying to log in to TurboTax find your return or need help downloading or installing press two, 2  We will now connect you with a representative. 3  for all other question please press three or remain on the line.