Exam 2: Nervous System i Saved
Place the following statements in the correct order for an action potential to be generated.
51
Excitatory postsynaptic
potentials (EPSP's) are
received.
Nat flows into the cell
making the inside more
positive.
00:32:10
Voltage-gated Na
channels open.
2
Na flows into the celll
making the inside more
positive
3
An action potential is
generated.
A neuron starts at its
resting membrane
potential.
The cell reaches
threshold.
5
An action potens
generated
6.

What is the main structural difference between enveloped and nonenveloped viruses? a) enveloped viruses have their genetic material enclosed by a layer made only of protein. b) nonenveloped viruses have only a phospholipid membrane, while enveloped viruses have two membranes, the other one being a protein capsid. c) enveloped viruses have a phospholipid membrane outside their capsid, whereas nonenveloped viruses do not have a phospholipid membrane. d) both types of viruses have a capsid and phospholipid membrane; but in the nonenveloped virus the genetic material is between these two membranes, while in the enveloped virus the genetic material is inside both membranes.