PSLE Science – General Practice Test

The main function of the digestive system is to break down food for nutrient absorption. This process involves several organs that work together to convert food into smaller, more absorbable components. When we eat, the digestive system starts by mechanically breaking down food through chewing and then chemically breaking it down through enzymes and acids in the stomach and intestines.

As food moves through the digestive tract, nutrients such as carbohydrates, proteins, fats, vitamins, and minerals are extracted and absorbed mainly in the small intestine. This absorbed material is then transported through the bloodstream to cells throughout the body, providing them with the energy and nutrients necessary for various bodily functions.

Without this vital process, the body would not be able to acquire the essential nutrients it needs to sustain life, making the digestive system fundamental to our overall health and well-being.