Biology Midterm Exam

The one factor that a scientist changes during an experiment.

• Controlled Variable

• Dependent Variable

• Independent Variable

The variable that is measured.

• Controlled Variable

• Dependent Variable

• Independent Variable

The factors that stay the same or are constant throughout the experiment.

• Controlled Variable

• Dependent Variable

• Independent Variable

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the independent variable?

• Dropping the same way

• Wing Length

• Amount of time it takes the helicopter to hit the floor

• Dropping from the same height

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the dependent variable?

• Dropping the same way

• Wing Length

• Amount of time it takes the helicopter to hit the floor

• Dropping from the same height

Cells grow, carry out normal functions, and copy their organelles.

• G1

• S

• G2

• M phase

Cells go through additional growth.

• G1

• S

• G2

• M phase

Cells undergo cell division, which involves both mitosis and cytokinesis.

• G1

• S

• G2

• M phase

Cells replicate DNA.

• G1

• S

• G2

• M phase

What two processes make up the M stage?

• fermentation & mitosis

• mitosis & cytokinesis

• glycolysis & cytokinesis

• G1 & G2