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The process of cellular respiration is used by organisms to?

  1. Produce energy from glucose

  2. Convert oxygen into glucose

  3. Produce energy from protein

  4. Convert glucose into oxygen

The correct answer is: Produce energy from glucose

Cellular respiration is a metabolic process that converts glucose and oxygen into energy in the form of adenosine triphosphate (ATP). Therefore, it makes sense that the correct answer is "A Produce energy from glucose." Option B is incorrect because oxygen cannot be converted into glucose through cellular respiration. Option C is also incorrect because protein is not the main source of energy for cellular respiration. Option D is incorrect because glucose cannot be converted into oxygen through this process. Thus, the correct answer is A.