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Questions and Answers
What is the main function of a neuron?
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?
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?
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?
What is the main component of nervous tissue in animals?
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Which organisms do not have nerve cells?
Which organisms do not have nerve cells?
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What is the main function of a neuron?
What is the main function of a neuron?
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What was the predecessor of neurons 800 million years ago?
What was the predecessor of neurons 800 million years ago?
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What is the specialized connection used by neurons to communicate with other cells?
What is the specialized connection used by neurons to communicate with other cells?
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What is the key innovation in the evolution of the nervous system?
What is the key innovation in the evolution of the nervous system?
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Which organisms do not have nerve cells?
Which organisms do not have nerve cells?
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