Biology The study of Life Bio: life ology: study of

Characteristics of Life Response to Stimulus (Movement) Growth & Development Reproduction Organization Homeostasis Use Energy

Response to Stimulus Stimulus is any response to an organism’s environment that causes it to react.

Growth & Development All organisms change during their lives Growth increases size Development is like the stages of life that humans go through: infant, adolescent, (puberty), adult.

Reproduction The species must reproduce This is how the species survives A group of organisms that interbreed and produce fertile offspring are called a species.

Reproduction (cont) Reproduction is a process that can allow gradual change in the characteristics of a species over time. Change over time is evolution. Change over time explains the great diversity of life.

Organization Each species has its own type of body organization cells, tissues, organs, systems are levels of organization All body systems interact with other systems.

Homeostasis The ability of the body of an organism to maintain it’s internal environment or conditions in the body. Example: body temperature Maintaining balance

Use Energy All living things obtain energy from their environment. They use this energy to move, grow and develop, reproduce, have organized body systems, and maintain homeostasis. Autotrophic vs Heterotrophic

Theme of Biology Living things do not exist in isolation They are all functioning parts in the delicate balance of nature. Life is dynamic, not static

Many Fields in Biology Microbiology Ecology Botony Zoology Mammology Herpitology Entomology Medicine Plus many more