In a reflex arc, the correct sequence of cell types through which an electrical signal would pass would be

A. motor neuron ? sensory neuron ? interneuron in the PNS
B. sensory neuron ? interneuron in the CNS ? motor neuron
C. sensory neuron ? motor neuron ? interneuron in the CNS
D. motor neuron ? interneuron in the PNS ? sensory neuron


B. sensory neuron ? interneuron in the CNS ? motor neuron

Biology & Microbiology

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Charlotte liked to have a suntan all of the time, so she never wore sunscreen at the beach or in the tanning salon. During a visit to her doctor, she was told that she has the most common form of skin cancer

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Biology & Microbiology

The evolution of many species from a single common ancestor is called

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Biology & Microbiology