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Psu Bio 161 Exam 2 Cq/Preweek/Wrapup (Secretion) Questions And Answers Rated A+
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Psu Bio 161 Exam 2 Cq/Preweek/Wrapup (Secretion) Questions And Answers Rated A+
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Psu Bio 161 Exam 2 Cq/Preweek/Wrapup(Secretion) Questions And Answers
Rated A+
neurotransmitters released from a presynaptic cell bind to _____ protein channels
located in the membrane of the postsynaptic cell
-voltage-gated
-chemical-gated
-both voltage-gated and chemical-gated
-mechanical-gated
-all of these are correct - ANSWER✔✔ chemical-gated
what channels would open in a postsynaptic cell during an EPSP (before threshold
is reached)?
-sodium chemical-gated
-potassium voltage-gated
-sodium voltage-gated
-potassium chemical-gated - ANSWER✔✔ sodium chemical-gated
at one postsynaptic neuron, the total EPSP change from RMP is +45mV and the
total IPSP change from RMP is -15mV. Will an action potential be triggered?
Assume RMP equals -70mV and threshold is -55mV. (hint- remember that EPSP's
and IPSP's are happening at the same time.)
-yes
-no - ANSWER✔✔ yes
The graph represents the change of potential of a single postsynaptic neuron.
RMP= -70mV
Threshold= -10mV
at about what time does an action potential start?
-1ms
-2ms
-3ms
-4ms - ANSWER✔✔ 2ms
The graph represents the change of potential of a single postsynaptic neuron.
RMP= -70mV
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