MEDIUM
AS and A Level
IMPORTANT
Earn 100
Describe the relationship between the strength of the stimulus and the size of the receptor potential that is generated.
Important Questions on Control and Coordination
MEDIUM
AS and A Level
IMPORTANT
Describe the relationship between the strength of the stimulus applied and the frequency of action potentials generated in the sensory neurone.
HARD
AS and A Level
IMPORTANT
What determines the maximum frequency of action potentials in a neurone?
HARD
AS and A Level
IMPORTANT
Threshold potentials in receptor cells can increase and decrease. Suggest the likely advantages of this.
MEDIUM
AS and A Level
IMPORTANT
Name the process by which vesicles release their contents at the presynaptic membrane.
EASY
AS and A Level
IMPORTANT
Describe the role of acetylcholinesterase.
MEDIUM
AS and A Level
IMPORTANT
Suggest why impulses travel in only one direction at synapses.
HARD
AS and A Level
IMPORTANT
Suggest why if action potentials arrive repeatedly at a synapse, the synapse eventually becomes unable to transmit the impulse to the next neurone.
EASY
AS and A Level
IMPORTANT
Make a table to compare coordination in mammals by the nervous system and by the endocrine system.
