AP BIOLOGY

Detailed explanation-1: -ll living organisms need energy to grow and reproduce, maintain their structures, and respond to their environments; metabolism is the set of the processes that makes energy available for cellular processes.

Detailed explanation-2: -The form of energy that living things need for these processes is chemical energy, and it comes from food. Food consists of organic molecules that store energy in their chemical bonds.

Detailed explanation-3: -Most living things need food, water, light, temperatures within certain limits, and air. Living things have a variety of characteristics that are displayed to different degrees: they respire, move, respond to stimuli, reproduce and grow, and are dependent on their environment.

Detailed explanation-4: -The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter. This process begins the flow of energy through almost all food webs.

Detailed explanation-5: -Organisms use sugar as a source of energy to do work. All living things require energy to do the work necessary for survival and reproduction. This is true for bacteria, plants, and animals.