AP Biology Experimental Design Quiz

What is the main focus of Science Practice 3 in AP Biology?

• Photosynthesis processes

• Experimental design and analysis

• Understanding cell structures

• Genetic mutations

In an experiment, what is the role of the independent variable?

• It is the factor that remains constant

• It is the factor that is not used

• It is the factor being manipulated

• It is the factor being measured

Which axis typically represents the independent variable on a graph?

• W-axis

• Z-axis

• Y-axis

• X-axis

What is a controlled variable in an experiment?

• A variable that is not included in the experiment

• A variable that is not measured

• A variable that is kept constant to ensure a fair test

• A variable that is changed to see its effects

What is the purpose of a control group in an experiment?

• To measure the dependent variable

• To serve as a baseline for comparison

• To manipulate the independent variable

• To introduce new variables

What is a negative control in an experiment?

• A sample with no variables

• A sample with multiple variables

• A sample that is not expected to change

• A sample expected to show a change

How can an experiment be improved for better results?

• By reducing the sample size

• By ensuring controlled variables are constant

• By increasing the number of variables

• By ignoring the control group

What should be considered when proposing a new investigation?

• The time of day

• The weather conditions

• The cost of materials

• The results of previous experiments

In the sample question about atrazine, what is the independent variable?

• The type of frogs

• The concentration of atrazine

• The temperature of the water

• The size of the pond

In the sample question about atrazine, what is the dependent variable?

• The color of the frogs

• The metamorphosis of the frogs

• The number of frogs

• The size of the pond