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Home Q & A Board Biology-Related Homework Help Cell Biology
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SpeedPert SpeedPert
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6 years ago
Foreign substances like nicotine, morphine, and menthol exert their initial effects by _____.
 
  (a) killing cells immediately, exerting their physiological effects by causing cell death.
  (b) diffusing through cell plasma membranes and binding to transcription factors to change gene expression.
  (c) interacting with cell-surface receptors, causing the receptors to transduce signal inappropriately in the absence of the normal stimulus.
  (d) removing cell-surface receptors from the plasma membrane.
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alimoreyalimorey
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