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WorksheetsCommunication within and between Neurons
Total questions: 20
Worksheet time: 7mins
Name
Class
Date
1.
The ______________ potential is electrical in nature and is "all or none"
a)
graded
b)
summative
c)
action
d)
kinetic
2.
The ________________ potential is summative in nature.
a)
action
b)
refractory
c)
saltatory
d)
graded
3.
Membrane potential is related to which electrical concept?
a)
Resistance
b)
Voltage
c)
Current
d)
Power
4.
Which of the following is responsible for getting large or charged (polar) molecules across the cell membrane?
a)
A
b)
B
c)
C
d)
D
5.
Hydrophilic portion of cell membrane?
a)
A
b)
B
c)
C
d)
E
D
D
6.
Hydrophobic region of the cell membrane?
a)
A
b)
B
c)
C
d)
D
7.
Hydrophilic means...
a)
water-loving
b)
water-fearing
c)
nonpolar
d)
lipid soluble
8.
What forms the channels and pumps in the phospholipid bilayer?
a)
carbohydrates
b)
proteins
c)
hydrophilic heads
d)
lipids
9.
What does "bilayer" mean?
a)
one layer
b)
two layers
c)
laminated
d)
bilateral
10.
Phospholipid heads are...
a)
Hydrophobic
b)
Hydrophilic
11.
When a neuron is resting, the inside of the axon has a ____________ charge.
a)
positive
b)
negative
12.
When a neuron is not engaged in an impulse.
a)
Resting potential
b)
Action potential
c)
Neural potential
d)
Synaptic potential
13.
Which ions are involved in the electrical nerve impulse?
a)
Iodine and Sodium
b)
Potassium and Sodium
c)
Iron and Sodium
d)
Calcium and Iodine
14.
When a neuron is in the resting state, the intracellular space has a charge of about
a)
-55 mV
b)
70 mV
c)
30 mV
d)
-70 mV
15.
The sodium-potassium pump usually pumps
a)
potassium out of the cell
b)
sodium out of the cell
c)
sodium into the cell
d)
both potassium and sodium into the cell
16.
Which type of transport requires an input of energy?
a)
Passive Transport
b)
Osmosis
c)
Simple Diffusion
d)
Active Transport
17.
Name the ion that is pumped into the axon to maintain resting potential.
a)
Calcium
b)
Hydrogen
c)
Potassium
d)
Sodium
18.
What maintains the resting membrane potential?
a)
Na/K pump
b)
Ion Channels
c)
Depolarization
d)
Hyperpolarization
19.
In resting potential, neurons have more _________ on the outside of the cell membrane.
a)
K+
b)
NaCl
c)
Na+
d)
Cl-
20.
Active transport requires ___ to provide energy that cells need to move against the gradient.
a)
ATP
b)
Water
c)
Oxygen
d)
Carbon dioxide
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