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NPTE Physical Therapist Exam Review

Category - Biology

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What is the by-product of anaerobic respiration in muscle tissue?

Lactic acid
Nitrogen
Oxygen
Carbon dioxide
Glycogen

Explanation

Answer: A, lactic acid. In anaerobic respiration, pyruvate is ultimately converted to lactic acid.

Key Takeaway: Anaerobic respiration provides an avenue for organisms to produce energy in the absence of oxygen. Conversely, aerobic respiration requires oxygen.

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