5.1a Animals and plants have a great variety of body plans and internal structures that
contribute to their ability to maintain a balanced condition.
5.1b An organisms overall body plan and its environment determine the way that the
organism carries out the life processes.
5.1c All organisms require energy to survive. The amount of energy needed and the
method for obtaining this energy vary among cells. Some cells use oxygen to release the
energy stored in food.
5.1d The methods for obtaining nutrients vary among organisms. Producers, such as
green plants, use light energy to make their food. Consumers, such as animals, take in
5.1e Herbivores obtain energy from plants. Carnivores obtain energy from animals.
Omnivores obtain energy from both plants and animals. Decomposers, such as bacteria
and fungi, obtain energy by consuming wastes and/or dead organisms.
5.1f Regulation of an organisms internal environment involves sensing the internal
environment and changing physiological activities to keep conditions within the range
required for survival. Regulation includes a variety of nervous and hormonal feedback
5.1g The survival of an organism depends on its ability to sense and respond to its