Hemoglobin

question 124

Multiple Choice

Hemoglobin

• A) plays a critical role in determining the total amount of O₂ that is exchanged because it acts as a storage depot, removing dissolved O₂ and thus keeping the PO₂ low so that net diffusion is allowed to continue.
• B) combines only with O₂ .
• C) is found in erythrocytes.
• D) both (a) and (c) above.
• E) all of these answers.

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