Which gas has a strong affinity for binding with hemoglobin in the bloodstream?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Biology Mcqsbiology-mcqs
Published
2 Jul 2020
Last updated
28 May 2026

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Explanation

Carbon monoxide binds to hemoglobin much more effectively than oxygen, preventing oxygen transport in the blood and leading to toxicity.

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