Ib Biology

Quiz
•
Biology
•
10th - 12th Grade
•
Hard
Standards-aligned
Charles Martinez
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The movement of which ion initiates an action potential?
Calcium
Magnesium
Sodium
Potassium
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the role of active transport in the transmission of nerve impulses by neurones?
Propagates an action potential by pumping sodium ions across the membrane out of the neurone.
Propagates an action potential by pumping sodium ions across the membrane into the neurone.
Initiates the action potential needed for the transmission of an impulse by pumping calcium ions out of the endoplasmic reticulum.
Establishes the resting potential needed for the transmission of an impulse by pumping sodium and potassium ions across the membrane.
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
In a nerve impulse, what happens at the site following the highest point of the action potential?
Voltage-gated sodium ion channels open and Na+ is pumped in.
Voltage-gated sodium ion channels open and Na+ diffuses out.
Voltage-gated potassium ion channels open and K+ is pumped out.
Voltage-gated potassium ion channels open and K+ diffuses out.
4.
FILL IN THE BLANK QUESTION
45 sec • 1 pt
......................... and ................... are parts of central nervous system.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which structural feature enables saltatory conduction?
Na+ channels under Schwann cells
K+ channels under Schwann cells
Nodes of Ranvier between Schwann cells
Sodium–potassium pumps under Schwann cells
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
Tags
NGSS.HS-PS2-5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when an action potential reaches motor end plates?
Calcium ions are absorbed by the muscle fibres.
Muscle relaxes.
Neurotransmitter is released.
Action potential is passed to the neuron.
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