During cellular respiration, which gas is released as a waste product?

Prepare for the Pre-IB Grade 9 Science Exam with detailed flashcards and multiple-choice questions. Each question is paired with hints and thorough explanations. Ace your test with confidence!

Multiple Choice

During cellular respiration, which gas is released as a waste product?

Explanation:
During cellular respiration, cells break down glucose and use oxygen to produce energy (ATP). As glucose is oxidized, carbon atoms are released as carbon dioxide, which travels in the blood to the lungs and is exhaled. Oxygen is actually consumed, not released, and the other options aren’t produced by human cellular respiration in this way. So the gas released as a waste product is carbon dioxide.

During cellular respiration, cells break down glucose and use oxygen to produce energy (ATP). As glucose is oxidized, carbon atoms are released as carbon dioxide, which travels in the blood to the lungs and is exhaled. Oxygen is actually consumed, not released, and the other options aren’t produced by human cellular respiration in this way. So the gas released as a waste product is carbon dioxide.

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