Question 1

The endoplasmic reticulum is one continuous organelle consisting of many tubules and cisternae.

Accepted Answer

A) True 
 B)False

Question 2

If a concentration or electrical gradient is present for a given substance, the substance will always passively permeate the membrane.

Accepted Answer

A) True 
 B)False

Question 3

The axon hillock occurs between the cell body and the axon of a neuron.

Accepted Answer

A) True 
 B)False

Question 4

A postsynaptic neuron can either excite or inhibit a presynaptic neuron.

Accepted Answer

A) True 
 B)False

Question 5

____________________ are chemical messengers that bind to neuronal receptors at nonsynaptic sites and alter the effectiveness of ongoing synaptic activity.

Accepted Answer

The answer of ____________________ are chemical messengers that bind to...

Question 6

The diffusion of potassium ions re-establishes the resting membrane potential in a neuron immediately after it develops an action potential.

Accepted Answer

A) True 
 B)False

Question 7

____________________ are molecules produced by nerve cells and that bind to nonsynaptic receptors.

Accepted Answer

The answer of ____________________ are molecules produced by nerve cells...

Question 8

A given synapse may produce EPSPs at one time and IPSPs at another time.

Accepted Answer

A) True 
 B)False

Question 9

Axon terminals possess ____________________ voltage-gated channels that, when operational, induce neurotransmitter release.

Accepted Answer

The answer of Axon terminals possess ____________________ voltage-gated channels that,...

Question 10

Match the terms, labelled a. through i., to their descriptions. (Options may be used more than once or not at all.)
a.endoplasmic reticulum (ER)
b.Golgi complex
c.lysosome
d.peroxisome
e.mitochondrion
f.vault
g.free ribosome
h.microtubule
i.microfilament
-removes unwanted cellular debris and foreign material

Accepted Answer

The answer of Match the terms, labelled a. through i.,...

Question 11

In active transport, the stomach pumps ____________________ ions into its lumen.

Accepted Answer

The answer of In active transport, the stomach pumps ____________________...

Question 12

During the resting potential, many potassium channels are open in the plasma membrane.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following statements is correct for the electron transport chains?

Accepted Answer

A) They are "circuits" for small amounts of electricity to pass through. 
B) They are made of proteins. 
C)  They deliver energy to cytochrome to pump H+ into the intermembrane space. 
D)  They do not need oxygen to be available.

Question 14

If red blood cells are placed in a ____________________ solution, water enters, causing them to swell.

Accepted Answer

The answer of If red blood cells are placed in...

Question 15

Which of the following regarding "saltatory conduction" is correct?

Accepted Answer

A) Saltatory conduction occurs in unmyelinated nerve fibres. 
B) Saltatory conduction is slower than conduction by local current flow because the myelin acts as an insulator to slow the impulse. 
C)  Saltatory conduction involves the impulse jumping from one node of Ranvier to the adjacent node. 
D)  Saltatory conduction refers to the action potential spreading from one Schwann cell to the adjacent Schwann cell.

Question 16

An increase in the size of the ____________________ of a nerve fibre increases its rate of conduction.

Accepted Answer

The answer of An increase in the size of the...

Question 17

Match the terms, labelled a. through c., with their characteristics, labelled 1. (Options may be used more than once or not at all.)
a.glycolysis
b.citric acid cycle
c.oxidative phosphorylation
-takes place on the inner mitochondrial membrane

Accepted Answer

The answer of Match the terms, labelled a. through c.,...

Question 18

Michael is using the electron microscope at the hospital to review the structures of skeletal muscle cells. He notices that the skeletal muscle cells have many nuclei and are loaded with mitochondria. Why is this so?

Accepted Answer

The answer of Michael is using the electron microscope at...

Question 19

The resting membrane potential of a typical nerve cell is about ____________________ millivolts.

Accepted Answer

The answer of The resting membrane potential of a typical...

Question 20

A change in a membrane potential from +30 mV to -70 mV is an example of _______________.

Accepted Answer

A) depolarization 
B) hyperpolarization 
C)  polarization 
D)  repolarization

Exam 2: Cell Physiology

The endoplasmic reticulum is one continuous organelle consisting of many tubules and cisternae.

If a concentration or electrical gradient is present for a given substance, the substance will always passively permeate the membrane.

The axon hillock occurs between the cell body and the axon of a neuron.

A postsynaptic neuron can either excite or inhibit a presynaptic neuron.

____________________ are chemical messengers that bind to neuronal receptors at nonsynaptic sites and alter the effectiveness of ongoing synaptic activity.

The diffusion of potassium ions re-establishes the resting membrane potential in a neuron immediately after it develops an action potential.

____________________ are molecules produced by nerve cells and that bind to nonsynaptic receptors.

A given synapse may produce EPSPs at one time and IPSPs at another time.

Axon terminals possess ____________________ voltage-gated channels that, when operational, induce neurotransmitter release.

In active transport, the stomach pumps ____________________ ions into its lumen.

During the resting potential, many potassium channels are open in the plasma membrane.

Which of the following statements is correct for the electron transport chains?

If red blood cells are placed in a ____________________ solution, water enters, causing them to swell.

Which of the following regarding "saltatory conduction" is correct?

An increase in the size of the ____________________ of a nerve fibre increases its rate of conduction.

Match the terms, labelled a. through c., with their characteristics, labelled 1. (Options may be used more than once or not at all.) a.glycolysis b.citric acid cycle c.oxidative phosphorylation -takes place on the inner mitochondrial membrane

Michael is using the electron microscope at the hospital to review the structures of skeletal muscle cells. He notices that the skeletal muscle cells have many nuclei and are loaded with mitochondria. Why is this so?

The resting membrane potential of a typical nerve cell is about ____________________ millivolts.

A change in a membrane potential from +30 mV to -70 mV is an example of _______________.