Examlex
Water can cross a cell membrane by a variety of means.List at least three.Do water molecules cross a membrane through the same molecules as other solutes? Explain.Are all cells equally permeable to water? Explain.
Airway
The part of the respiratory system through which air flows, starting from the nose and mouth down to the bronchi of the lungs.
Breathing
The physical process involving the inhalation and exhalation of air, essential for life.
Prophylactic
Preventing disease.
Poison
A substance that, if taken internally or applied externally, is a threat to life.
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