Answer:-
Among the following, the one not transferred by alveoli is carbon dioxide. Oxygen from inhaled air diffuses into the bloodstream through alveolar walls, while carbon dioxide, a waste product of metabolism, moves from the bloodstream into the alveoli to be exhaled. However, other substances like oxygen, water vapor, and small particles can be exchanged across alveolar membranes. Carbon dioxide, though crucial for gas exchange, is not "transferred" by alveoli in the same way as the other substances mentioned.
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