AP BIOLOGY

Detailed explanation-1: -Living things require energy to maintain internal conditions (homeostasis), for growth, and other life processes.

Detailed explanation-2: -Homeostasis is the maintenance of a stable internal environment. Homeostasis is a term coined to describe the physical and chemical parameters that an organism must maintain to allow proper functioning of its component cells, tissues, organs, and organ systems.

Detailed explanation-3: -Maintaining a constant internal environment by providing the cells with what they need to survive (oxygen, nutrients, and removal of waste) is necessary for the well-being of both individual cells and the entire body.

Detailed explanation-4: -What do cells need to stay alive? Cells require oxygen as animals need oxygen to respire. They also need water as this allows the cell to store and transport dissolved substances. Animal cells need food to get energy for growth, repair and reproduction.

Detailed explanation-5: -All living things exhibit “homeostasis, ” which is the ability to maintain a steady internal environment regardless of their external environment.