Unit 6 Test Review*

1. Which statement below describes energy?

• Energy is required for organisms to grow new cells.
• Organisms can transform one form of energy into another.
• Energy is the ability to do work.
• All of the above.

2. Which of the following statements provides an example of how energy is changed from kinetic to potential energy.?

• A cell phone transforms the chemical energy in its batteries into electricity.
• A tree uses the sun's energy to transform water and carbon dioxide into glucose.
• Light waves produce heat.

3. During the process of photosynthesis, the total amount of energy remains constant within a system as it transfers from kinetic to potential energy?

• True
• False

4. Organisms require energy to complete the functions necessary for life. Those functions include: (select all that apply)

• Growing new cells
• Maintain body temperature
• Pumping blood through their body
• Escaping predators

5. Which way is NOT a way that organisms obtain the energy they need to survive?

• Through consuming other organisms
• Through a proper amount of sleep
• Through photosynthesis

6. Which variables could affect the rate of primary production?

• Light
• Temperature
• Nutrients
• All of the above

7. How does energy flow through a food chain?

• It beings with a consumer and transfers to various producers.
• It begins with a producer and transfers to various consumers.

8. _______ feed on dead organisms and break down the nutrient molecules found in an organisms' tissues into simpler molecules that can be used by producers during photosynthesis. Examples include bacteria and fungi.

• Detritivores
• Decomposers
• Keystone species

9. _____ get their energy by feeding on dead organisms and provide energy by excreting wastes. Examples include crayfish and worms.

• Detritivores
• Decomposers
• Keystone species

10. _____ are usually one of the least abundant organisms in a community but have a disproportionate effect on the way energy flows through the community.

• Detritivores
• Decomposers
• Keystone species