LIFE SCIENCE

Detailed explanation-1: -Food provides molecules that serve as fuel and building material for all organisms. Plants utilize photosynthesis, a process in which cells use the energy in sunlight to make sugars out of carbon dioxide and water, to generate food.

Detailed explanation-2: -Glucose and other food molecules are broken down by controlled stepwise oxidation to provide chemical energy in the form of ATP and NADH.

Detailed explanation-3: -Energy-dense foods with high caloric content are generally those with high carbohydrate, protein, or fat content-for example, pasta, bread, oatmeal, grits, and other cooked whole grains and porridges consumed around the world as staples; plant oils or animal lard present in cooked foods, or meat and cheese.