Organisms include both living and nonliving things

The basic unit of life, microscopic in size, organisms can be single or multi

Needed by all organisms; substances that provide energy that organisms need

Ability to reproduce is necessary to be considered a living thing.

Organisms have to do certain things to keep themselves alive like exchange gasses, move, and gather food.

Animals have a certain process for gathering energy from the sun called photosynthesis.

Organisms have certain structures that perform functions for living. Structures can look different in organisms despite having similar functions. Which of the following is not an example of this?

transport oxygen, food, and other substances throughout the body; • transport some wastes to other organs for elimination • defend the body against diseases • connect all other organ systems

break down food pieces into much smaller pieces (particles) so they can be absorbed and transported throughout the body

• provide a movable support frame for the body • protect soft-tissue organs such as the heart and lungs

kidneys, bladder, lungs, skin, liver

• move bones • move organs that contain muscle tissue (such as the heart and stomach)

brain spinal cord nerves eyes, ears, and other sensing organs