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WorksheetsCoordination and Response IGCSE Biology
Total questions: 26
Worksheet time: 22mins
Which type of cells do all sense organs contain?
ciliated
effector
mesophyll
receptor
The diagram shows a cell.
What type of cell is shown?
ciliated cell
motor neurone
relay neurone
sensory neurone
The diagram shows a cell.
What type of cell is shown?
ciliated cell
motor neurone
relay neurone
sensory neurone
The diagram shows a neurone carrying an impulse.
Which row describes the type of neurone and the direction of impulse?
Which choice describes the type of neurone and the direction of impulse?
type of neurone = motor; direction of impulse = towards the spinal cord
type of neurone = motor; direction of impulse = away from the spinal cord
type of neurone = sensory; direction of impulse = towards the spinal cord
type of neurone = sensory; direction of impulse = away from the spinal cord
A bright light suddenly shines into a person’s eyes.
What happens?
The lenses become more concave.
The lenses become more convex.
The pupils become larger.
The pupils become smaller.
The diagram shows the human nervous system.
Which letter indicates a part of the central nervous system?
A
B
C
D
Which list describes the correct sequence of a simple reflex arc?
A receptor, relay neurone, motor neurone, sensory neurone, effector
B receptor, relay neurone, sensory neurone, motor neurone, effector
C receptor, sensory neurone, motor neurone, relay neurone, effector
D receptor, sensory neurone, relay neurone, motor neurone, effector
The diagram shows a simple reflex arc.
Which labelled part is the sensory neurone?
A
B
C
D
Some structures in the eye are listed.
1 cornea
2 iris
3 lens
4 retina
Which structures contain light receptors?
1, 2 and 3
2, 3 and 4
2 and 4 only
4 only
How can we best describe a nerve impulse?
An electrical signal that passes along nerve cells called neurones
A chemical signal that is transferred to an electrical signal
An electrical charge that travels in nerve endings
Brain's response to an unfavourable change
What is CNS?
Central Neurone System
Brain and spinal cord
Peripheral neurones
Synapses that connect neurones
Which structure of the eye contains light receptor cells?
Retina
Lens
Cornea
Iris
How does lens help us see objects that are far?
It stays the same
It becomes fatter
It becomes flatter
It becomes more spherical
What is the job of optic nerve?
To carry nerve impulses to the brain
To convert light to electrical signal
To react to too much light
To help bending light
What is the main advantage of nervous response over chemical response?
Nervous response is safer
Nervous response lasts longer
Nervous response is unconscious
Nervous response is quicker
Which of the following is NOT TRUE about the synapse?
At the synapse, neurotransmitters are released at the postsynaptic membrane.
At the synapse, chemical signals are converted into electrical signals.
Small gap between neuron is called synaptic cleft
Neurotransmitter binds to ligand-gated ion channel on post-synaptic membrane
Stucture that contain neurotransmitter is....
B
A
D
E
Neurotransmitters are released from the
Dendrites
Post-synaptic neuron
Presynaptic neuron
Schwann Cells
What is the chemical used by a neuron to transmit an impulse across a synapse to another nerve cell?
Neurotransmitters
Synapse
Threshold
Impulse
Which part of the eye controls the size of the pupil?
Cornea
Lens
Retina
Iris
What is the main difference between nervous response and chemical response?
Nervous response is unconscious
Nervous response is safer
Nervous response lasts longer
Nervous response is quicker
