Unit 1: The Science of Biology

What are the constant variables?

• what we are changing or testing

• what we are observing or measuring

• what we keep the same to make the experiment fair

The variable the is changed on purpose is..

• Constant
• Control
• Independent Variable
• Dependent Variable

The variable the is measured is..

• Constant
• Control
• Independent Variable
• Dependent Variable

Scientific Question: Will a person fall asleep faster if they listen to music?

What is the variable we measure?

• music

• time to fall asleep

• person

What is the INDEPENDENT  variable (cause) is this experiment? 
"Which type of medium is best for plant growth?" 

• height of plant (cm)
• type of medium (soil vs. sand)
• amount of medium
• types of plant

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what is the dependent variable?

• Type of plant
• Water, apple juice, milk
• Plant growth

The higher the temperature of water, the faster the egg will cook.  Select the independent variable.

• Faster Egg Cooks
• Higher Temperature

What is the most basic (smallest) functional level of organization/life?

• Organisms

• Cells

• Ecosystems

• Biosphere

A prediction that can be tested is a 

• conclusion.

• hypothesis.

• theory

• independent variable.

What do we call the maintenance of internal conditions of an organism within a certain boundary range?

• Evolution

• Homeostasis

• Photosynthesis

• Adaptation