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iren [92.7K]
3 years ago
14

For gas exchange to be efficient, the respiratory membrane must be ________.

Biology
1 answer:
Angelina_Jolie [31]3 years ago
5 0
<span>The correct answer is b.0.5 to 1 micrometre thick.</span>
Usually, the respiratory membrane is about 0.6 micrometres thick. This membrane consists of the alveolar epithelial cells, the capillary endothelial cell, and basement membranes which are formed by the alveolar and capillary cells.
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