Define Assimilation.

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Assimilation**: Assimilation is the biological process through which the absorbed nutrients from food are utilized by the cells of the body for various cellular activities.

2. **Nutrient Absorption**: The nutrients that are absorbed into the cells primarily include carbohydrates, proteins, and fats.

3. **Role of Carbohydrates**: The main carbohydrate that is absorbed is glucose. Glucose is essential for cellular respiration, a process that generates ATP (adenosine triphosphate), which is the energy currency of the cell.

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