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Answer:
Glucose aka O B. sugar
Glucose is a monosaccharide or simple sugar. It is the primary source of energy for living organisms. Glucose is produced by plants through photosynthesis, it is used to form starch , a form of energy storage, and fiber such as cellulose, which is a structural component of plants.
The primary source of the energy for most of the cell in the body is sugar.i.e, option 'B'
What is the primary source of energy?
Carbohydrates (sugar) is the main primary source of the cell. It get breakdown in the ATP molecules which are consider as energy molecule of cell. They formed in mitochondria of cell.
Glucose (sugar) is present in our body which undergoes through biological pathway to produces ATP molecule (energy currency molecule) which provide energy to the cell.So, sugar is the primary source of energy for most cells in the body
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