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Question
Cells breakdown ________ using oxygen, to produce water, carbon dioxide and energy.
Options:
A .  proteins
B .  fats
C .  amino acids
D .  glucose
Answer: Option D
:
D
Cells breakdown glucose to produce water and carbon dioxide. Energy is released in the form of ATP. This process is called cellular respiration. When this process happens in the presence of oxygen, it is called aerobic respiration and when it happens in the absence of oxygen, it is called anaerobic respiration.
It can be summarised as:
C6H12O6+6O26CO2+6H2O+38ATP

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