Long answer type question 1) Why do we need food? Give two reasons.
Answers
Organisms need to take food because organisms need energy to perform any activity or function and they get energy from food because organisms need carbohydrate, vitamins, and minerals and other nutrients to gain energy and proteins to live and to continue metabolism.
Answer:
Organisms need to take food because organisms need energy to perform any activity or function and they get energy from food. Because organisms need carbohydrate, vitamins, and minerals and other nutrients to gain energy and proteins to live and to continue metabolism.
Explanation:
Cells, the tiny units that make up the human body, need a regular source of energy to perform their basic functions, and they receive this energy from digested food. Human cells have semi-permeable outer membranes that allow some molecules, such as the sugars and fats that are necessary for the creation of energy, to enter the cell.
Molecules of food are held together by chemical bonds that contain stored energy. When the digestive system breaks down these foods by breaking those bonds, it releases that energy.
Each time a bond is broken, it releases energy that the cell can either burn immediately or store for later use. Energy that is stored is reassembled in the form of ATP molecules. These molecules have bonds that are easy to break quickly whenever the cell needs energy.
The glucose and other molecules transitions from the digestive system to the circulatory system, where it travels throughout the body through the blood vessels,
The blood delivers this energy to all of the body's systems and organs.