Units 1 & 2 SOL Review

Which is a possible hypothesis for this experiment?

• If the intensity of the light increases, does the color change?

• If the rate of photosynthesis increases, then the plants don't do photosynthesis

• If the light intensity decreases, then the rate of photosynthesis decreases.

• If the color of the light changes, then the rate of photosynthesis changes.

What is the IV and what is the DV?

• IV: depth of plant, DV: depth of water

• IV: number of bubbles produced, DV: number of minutes

• IV: Depth of water, DV: number of bubbles produced

• IV: Type of plant, DV: Temperature of water

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, the independent variable is ...

• The type of plant
• The amount of sunlight
• The type of music
• The type of liquid

A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs

The graph below shows atmospheric carbon dioxide levels since the year 1880.Which of the following conclusions can be drawn from this graph

•  Atmospheric carbon dioxide levels are responsible for global temperature change.
•  Atmospheric carbon dioxide levels have been rising at about the same rate for the past century.
• Atmospheric carbon dioxide levels have remained the same over the past century.
•  Atmospheric carbon dioxide levels have been rising at an increasingly higher rate as the past century has progressed.

What was the control?

• The amount of sunlight

• The seeds that sprouted

• The watering can

• The pot without water added

The diagram shows a plant growth investigation. The hours of light exposure, the plant type, and the soil volume are ___

• Independent variables (IV)

• Dependent variables (DV)

• Constants

Which of the following is NOT an example of homeostasis?

• A human producing gametes

• A plant bending toward sunlight

• A bird drinking water when thirsty

• A dog stealing chicken off the kitchen counter when hungry

Which pair is incorrect?

• carbohydrates - provide energy

• lipids - provide insulation

• nucleic acids - store hereditary information

• proteins - provide energy

Which is false?

• Enzymes bind to a substrate.

• Enzymes slow down chemical reactions.

• Enzymes lower the activation energy.

• Enzymes are affected by temperature and pH.