The Scientific Method and Characteristics of Life. Academic

How do heterotrophs get the energy they need to survive?

• photosynthesis

• eating other organisms

• decomposing dead materials

• chemosynthesis

When a baby kitten becomes an adult cat, this BEST describes which characteristic of life?

• energy metabolism

• growth and development

• response to stimuli

• having cells

Maintaining a stable internal environment is called

• homeostasis

• equilibrium

• balance

• evenness

The variable that gets changed or manipulated in an experiment is the:

• dependent variable

• independent variable

Organisms, such as bacteria, are ______________ which means they consist of only a single cell.

• unicellular
• multicellular
• autotrophic
• heterotrophic

Mr. S. sets up an experiment to see how the mass of a ball affects the distance it rolls. Identify the dependent variable.

• height of the ramp

• distance traveled by the ball

• weight of the ball

A gardener wants to know what chemical best repels bugs in their garden. The gardener sets up an experiment with 3 different chemicals and observes every day for a week how many bugs are found near the chemicals. What is the independent variable in this experiment?

• the gardener

• the bugs

• the chemicals

Martha was told by her health teacher that breakfast is one of the most important meals of the day. Martha wants to test if she will actually do better in school if she eats breakfast. What is the independent variable?

• doing better in school

• eating breakfast

• the health teacher

Read the following hypothesis: If students listen to music while they do work, then they will not be able to retain as much information. Which is the dependent variable?

• listening to music

• retaining information

Fire is living because it has 3 of the 6 characteristics of life.

• True

• False