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Course: Edexcel International GCSE Biology 4BI1
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Edexcel International GCSE Biology 4BI1

2. Structure & Functions in Living Organisms

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Co-ordination & Response – Check yourself

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Co-ordination & Response Edexcel O Level Linear Biology check yourself quiz: free practice for Edexcel Linear – OL. Work through this Co-ordination & Response Edexcel O Level Linear Biology check yourself quiz and get instant feedback on every answer. If you get stuck, review the 2j Co-ordination and response — Notes lesson. More practice: Edexcel Linear – OL — all units. Syllabus: Pearson Edexcel International GCSEs.

1.
Which structures form the central nervous system?
Nerves and muscles
Brain and spinal cord
Receptors and effectors
Brain and glands
2.
How does a signal cross a synapse?
As an electrical current
Carried by red blood cells
By a neurotransmitter diffusing across the gap
Through a direct cytoplasmic link
3.
A root growing downwards shows
positive geotropism
negative geotropism
positive phototropism
no tropism
4.
Which is a feature of hormonal control compared with nervous control?
Faster
Uses electrical impulses
Very precise single target
Longer-lasting effect
5.
What is the correct order in a reflex arc?
Receptor, motor, relay, sensory, effector
Receptor, sensory, relay, motor, effector
Effector, motor, relay, sensory, receptor
Sensory, receptor, relay, effector, motor
6.
Which best defines homeostasis?
Growth of an organism
Response to light
Maintaining a constant internal environment
Producing hormones
7.
Which statement best describes Receptor?
A change in the internal or external environment that can be detected by a receptor.
A chemical messenger secreted by an endocrine gland into the blood that acts on target organs.
A growth response of a plant towards or away from a directional stimulus.
A cell or organ that detects a stimulus and converts it into an electrical impulse.
8.
Which statement best describes Tropism?
A muscle or gland that carries out a response.
A rapid, automatic response to a stimulus that does not involve conscious thought.
A change in the internal or external environment that can be detected by a receptor.
A growth response of a plant towards or away from a directional stimulus.
9.
Which statement best describes Synapse?
A nerve cell that carries electrical impulses.
The junction between two neurones where a chemical neurotransmitter crosses a small gap.
A rapid, automatic response to a stimulus that does not involve conscious thought.
A change in the internal or external environment that can be detected by a receptor.
10.
Which statement best describes Stimulus?
The junction between two neurones where a chemical neurotransmitter crosses a small gap.
A cell or organ that detects a stimulus and converts it into an electrical impulse.
The maintenance of a constant internal environment.
A change in the internal or external environment that can be detected by a receptor.
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