Neurons and Neural Communication Quiz
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Questions and Answers

What is the main function of a neuron?

  • To produce chemical neurotransmitters
  • To form specialized connections with fungi
  • To create post-synaptic scaffolds
  • To fire electric signals across a neural network (correct)
  • How do neurons communicate with other cells?

  • Via ion channels generating slow electrical signals
  • Via specialized connections using only electric signals
  • Via synapses using chemical neurotransmitters (correct)
  • Via direct physical contact with other cells
  • When did the ability to generate electric signals first appear in evolution?

  • 800 million years ago
  • 900 million years ago
  • 600 million years ago
  • 700 million years ago (correct)
  • What is the main component of nervous tissue in animals?

    <p>Neurons</p> Signup and view all the answers

    Which organisms do not have nerve cells?

    <p>Plants and fungi</p> Signup and view all the answers

    What is the main function of a neuron?

    <p>To transmit electric signals across a neural network</p> Signup and view all the answers

    What was the predecessor of neurons 800 million years ago?

    <p>Peptidergic secretory cells</p> Signup and view all the answers

    What is the specialized connection used by neurons to communicate with other cells?

    <p>Synapses</p> Signup and view all the answers

    What is the key innovation in the evolution of the nervous system?

    <p>Ability to generate electric signals</p> Signup and view all the answers

    Which organisms do not have nerve cells?

    <p>Plants and fungi</p> Signup and view all the answers

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