AP BIOLOGY

Detailed explanation-1: -Living organisms must take in energy via food, nutrients, or sunlight in order to carry out cellular processes. The transport, synthesis, and breakdown of nutrients and molecules in a cell require the use of energy.

Detailed explanation-2: -Energy is the ability to do work. It is needed by all living things and every living cell to carry out life processes, such as breaking down and building up molecules, and transporting many molecules across cell membranes.

Detailed explanation-3: -All living things need food to stay alive, grow, and get energy. Nutrition is the process by which living things get or make food. All animals get food by eating other living things. Herbivores eat plants, while carnivores eat other animals.

Detailed explanation-4: -Every living thing-from one-celled algae to giant blue whales-needs food to survive. Each food chain is a possible pathway that energy and nutrients can follow through the ecosystem. For example, grass produces its own food from sunlight. A rabbit eats the grass.

Detailed explanation-5: -Energy Molecules: Glucose and ATP. Organisms mainly use two types of molecules for chemical energy: glucose and ATP. Both molecules are used as fuels throughout the living world. Both molecules are also key players in the process of photosynthesis .