Organisms, including humans, need to eat food to obtain essential nutrients and energy. The energy derived from food is utilized for various body functions such as digestion, respiration, and excretion.
NCERT Class 8 Science
Chapter 1 Crop Production and Management
Organisms, including humans, need to eat food for essential nutrients and energy. Food provides the raw materials necessary for the body’s growth, maintenance, and repair. Nutrients such as carbohydrates, proteins, fats, vitamins, and minerals support various physiological functions, including metabolism, immune system function, and cell structure. Additionally, food serves as an energy source, as the body converts nutrients into adenosine triphosphate (ATP), the primary energy currency. Without a continuous intake of food, organisms would lack the necessary building blocks and energy to sustain life, compromising their overall health, growth, and biological functions.