Section 1 Cells and Systems

What are the 6 characteristics of living things?

Organisms include both living and nonliving things

• True

• False

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

• organs

• tissue

• cells

• structures

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

• minerals

• vitamins

• photosynthesis

• nutrients

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

• True

• False

Organisms must adapt to their environments. Give an example of an organism adapting to its environment.

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

• True

• False

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

• True

• False

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?

• Dolphins use fins for moving while tigers use legs.

• Fish use gills for breathing while humans use lungs.

• Moose use their mouth and teeth for gathering food while a bird uses its beak

• Chimpanzees use their feet for climbing and gathering food

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

• Circulatory System

• Respiratory System

• Digestive System

• Nervous System