DENDROLOGY

Detailed explanation-1: -cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.

Detailed explanation-2: -Animal cells need food to get energy for growth, repair and reproduction. Therefore, cells cannot survive without water, oxygen and food. Cells have multiple organelles (you might think of these like organs in humans) and the cells need to provide food, water and oxygen for them to perform their functions.

Detailed explanation-3: -Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body’s cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.

Detailed explanation-4: -The primary source of energy for animals is carbohydrates, primarily glucose: the body’s fuel. The digestible carbohydrates in an animal’s diet are converted to glucose molecules and into energy through a series of catabolic chemical reactions. Adenosine triphosphate, or ATP, is the primary energy currency in cells.

Detailed explanation-5: -But they release most of the oxygen produced during photosynthesis into the air as a waste product. Unlike plants, which can get energy directly from sunlight, animals (including humans) must get energy from the food they eat. That food can be plants and/or other animals.