Answer:
A. elements
<em>I</em><em> hope</em><em> it's</em><em> helps</em><em> you</em>
D. oxygen is used to break down glucose into energy
Explanation:
During respiration, oxygen is used to break down glucose into energy:
C₆H₁₂O₆ + O₂ → CO₂ + H₂O + energy
In the process of respiration, oxygen gas combines with glucose to liberate energy.
- Respiratory system in the body is responsible for the metabolic break down of food to provide energy for the working of the human body.
- Chemical energy in glucose is broken down to produce other forms of energy most especially heat.
- The by product is usually carbon dioxide and water vapor.
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Respiration brainly.com/question/3447259
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A catalyst
A catalyst can be in many forms
