Which of the following is not the function of digestive system ?

Options

A. It allows your body to get the nutrients and energy it needs from the food you eat.
B. It breaks down large food molecules into smaller molecules that can be used by cells
C. it converts foods to large substances that can be absorbed and used by the cells of the body
D. It converts food into soluble and diffusible products that can be absorbed by the blood

Answer

To determine which of the following is not a function of the digestive system, we will analyze each option provided:

1. **It allows your body to get the nutrients and energy it needs from the food you eat.**
- This statement is true. The digestive system is essential for breaking down food into nutrients that the body can absorb and utilize for energy.

2. **It breaks down large food molecules into smaller molecules that can be used by cells.**
- This statement is also true. One of the primary functions of the digestive system is to break down complex food substances into simpler molecules (like carbohydrates into sugars, proteins into amino acids, etc.) that can be absorbed by the cells.

3. **It converts food to large substances that can be absorbed and used by the cells of the body.**
- This statement is false. The digestive system does not convert food into large substances; rather, it breaks down food into smaller, soluble, and diffusible products that can be absorbed by the bloodstream. Therefore, this option does not describe a function of the digestive system.

4. **It converts food into soluble and diffusible products that can be absorbed by the blood.**
- This statement is true. The digestive system transforms food into forms that can be easily absorbed into the bloodstream, such as amino acids, fatty acids, and simple sugars.

Based on the analysis above, the correct answer to the question "Which of the following is not the function of the digestive system?" is:
**It converts food to large substances that can be absorbed and used by the cells of the body.**