Which of the following are functions of the digestive system? Select all that apply.to help cells get energy and building material from foodto break food into small particlesto help cells get oxygento help cells make foodSubmit

The functions of the digestive system include:

1. To help cells get energy and building material from food: This is a primary function of the digestive system. The food we eat contains nutrients that our bodies need to function. The digestive system breaks down this food into smaller molecules that our cells can use for energy and to build and repair tissues.

2. To break food into small particles: This is another key function of the digestive system. Starting in the mouth with chewing and continuing in the stomach and intestines with the action of digestive enzymes, the digestive system breaks down food into tiny particles that can be absorbed into the bloodstream.

The other two options are not functions of the digestive system:

3. To help cells get oxygen: This is a function of the respiratory system, not the digestive system. The respiratory system is responsible for taking in oxygen and expelling carbon dioxide.

4. To help cells make food: This is not a function of any human body system. In humans, food must be consumed; our cells cannot make food. Some organisms, like plants, can make their own food through a process called photosynthesis, but this is not a function of the digestive system.