BIOMOLECULES AND ENZYMES

Detailed explanation-1: -All parts of the body (muscles, brain, heart, and liver) need energy to work. This energy comes from the food we eat. Our bodies digest the food we eat by mixing it with fluids (acids and enzymes) in the stomach.

Detailed explanation-2: -Food items which are rich in carbohydrates and fats provide us with energy hence are called as energy-giving foods. Food items like cereals, fruits and vegetables are required by the body in more amount.

Detailed explanation-3: -Energy produced from food in the human body is used to maintain the body’s essential functions (e.g. cell growth and repair, respiration, blood transport) and perform physical tasks including work, exercise and recreational activities.

Detailed explanation-4: -Food energy is chemical energy that animals (including humans) derive from their food to sustain their metabolism, including their muscular activity. Most animals derive most of their energy from aerobic respiration, namely combining the carbohydrates, fats, and proteins with oxygen from air or dissolved in water.