Lesson 3.1.1

3.1.1 Neurons, neurotransmitters and recreational drugs Quiz: Pearson Edexcel Psychology, Unit 3

20 questions

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Lesson 3.1.1, Neurons, neurotransmitters and recreational drugs: 20 multiple choice questions for the Pearson Edexcel Psychology (9PS0), Unit 3: Biological psychology, written with Revision Ninja.

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The 20 questions

  1. What is the primary function of a neuron in the central nervous system?

    • Digesting glucose
    • Transmitting signals
    • Producing hormones
    • Storing blood

  2. Which structure of a neuron receives incoming chemical signals from other neurons?

    • Dendrites
    • Myelin sheath
    • Axon
    • Terminal button

  3. What is the main function of the myelin sheath on an axon?

    • Speed up transmission
    • Store synaptic vesicles
    • Receive chemical signals
    • Release neurotransmitters

  4. Which chemical messengers carry signals across the synaptic gap to adjacent neurons?

    • Action potentials
    • Enzymes
    • Neurotransmitters
    • Hormones

  5. What name is given to the microscopic gap between two communicating neurons?

    • Axon terminal
    • Synaptic cleft
    • Receptor site
    • Node of Ranvier

  6. What event directly triggers the release of neurotransmitters into the synaptic cleft?

    • Reuptake pump activation
    • Receptor site binding
    • Enzymatic breakdown
    • Electrical impulse arrival

  7. Which part of a neuron carries electrical impulses away from the cell body?

    • Axon
    • Nucleus
    • Receptor site
    • Dendrite

  8. Which neurotransmitter is primarily associated with the brain's reward and pleasure pathways?

    • GABA
    • Dopamine
    • Acetylcholine
    • Serotonin

  9. Which neurotransmitter is mainly responsible for regulating mood, sleep, and appetite?

    • Noradrenaline
    • Dopamine
    • Glutamate
    • Serotonin

  10. What threshold-dependent rule states that an action potential fires fully or not at all?

    • All-or-none law
    • Reuptake rule
    • Summation principle
    • Refractory law

  11. Which neurotransmitter acts as the primary inhibitory chemical in the human brain?

    • Acetylcholine
    • Dopamine
    • Glutamate
    • GABA

  12. What process involves the presynaptic neuron reabsorbing neurotransmitters from the synaptic cleft?

    • Excitation
    • Action potential
    • Reuptake
    • Diffusion

  13. What effect does an excitatory neurotransmitter have on the postsynaptic neuron?

    • Degrades receptor sites
    • Increases firing likelihood
    • Prevents signal release
    • Decreases firing likelihood

  14. What structure allows one-way signal transmission between two individual nerve cells?

    • Myelin sheath
    • Axon hillock
    • Synapse
    • Node of Ranvier

  15. Blocking the reuptake of serotonin causes its concentration in the synaptic cleft to do what?

    • Stop binding
    • Disappear
    • Increase
    • Decrease

  16. Why is animal research into neurotransmitter function often criticised when applied to humans?

    • High ecological validity
    • High demand characteristics
    • Excessive cost
    • Low generalisability

  17. What term describes electrical impulses jumping between nodes of Ranvier along a myelinated axon?

    • Synaptic transmission
    • Summation
    • Action potential
    • Saltatory conduction

  18. What are the chemical messengers released across the synaptic cleft called?

    • Neurotransmitters
    • Hormones
    • Action potentials
    • Enzymes

  19. What is the main function of the terminal buttons on a neuron?

    • Insulating the axon
    • Releasing neurotransmitters
    • Receiving chemical signals
    • Generating action potentials

  20. Which neurotransmitter is primarily involved in arousal and the fight-or-flight response?

    • GABA
    • Dopamine
    • Serotonin
    • Noradrenaline

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