Section 1 Cells and Systems

What are the 6 characteristics of living things?

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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.

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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