Exam (elaborations)
2024 AQA A-LEVEL BIOLOGY - RESPONSE TO STIMULI EXAM WITH CORRECT ANSWERS
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2024 AQA A-LEVEL BIOLOGY - RESPONSE TO STIMULI EXAM WITH CORRECT ANSWERS
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2024 AQA A-LEVEL BIOLOGY -RESPONSE TO STIMULI EXAM
WITH CORRECT ANSWERS
Stimulus - CORRECT-ANSWERSA detectable change in the internal or
external environment of an organism
Receptors - CORRECT-ANSWERSSpecific to one type of stimulus, with the
coordinator finding an appropriate response
Importance of Reflex Arcs - CORRECT-ANSWERSThey are important because:
- They are involuntary so do not require thinking power
- They are fast due to the short pathway
- Protect the body from harm
Features of Sensory Reception - CORRECT-ANSWERSThe Pacinian corpuscle
is:
- Specific to one type of stimulus
- The producer of a generator potential through acting as a transducer
(converts the stimuli into energy)
Stretch-Mediated - CORRECT-ANSWERSThe name of the sodium channel that
is part of the pacinian corpuscle, which are deformed to allow for the
movement of sodium ions
Fovea - CORRECT-ANSWERSThe location of cones in the eye
Periphery - CORRECT-ANSWERSThe location of rods in the eye
1 - CORRECT-ANSWERSThe number of cone cells connected to one bipolar
cell
3 - CORRECT-ANSWERSThe number of rod cells connected to one bipolar cell
Good - CORRECT-ANSWERSThe visual acuity of cones
Poor - CORRECT-ANSWERSThe visual acuity of rods
Sensitive - CORRECT-ANSWERSThe sensitivity of rods in low light
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