Chapter 3 Practice Test

Which of the following organisms are autotrophs?

• fungi
• humans
• rabbits
• oak trees

Plants are green because of ______, the main photosynthetic pigment in chloroplasts.

• mitochondria
• chlorophyll
• sunlight
• carbon dioxide

Which of the following labels is correct?

• A is water
• B is sugar
• C is Hydrogen
• D is Oxygen

Suppose a volcano threw so much ash into the air that is blocked much of the sunlight. How might this event effect the ability of animals to obtain energy to live? Check all that are correct.

• It will prevent photosynthesis, but animals don't do that so it doesn't matter
• It will prevent photosynthesis, so there won't be plants for the herbivores to eat and they will not be able to get energy
• Herbivores will starve and die, leaving the predators without food and they won't be able to get energy
• Without photosynthesis, the food chain will collapse because no animals will be able to get energy
• It won't affect animals at all

How is one way that you can get energy from the sun by eating a school pizza?

• The plants in the pizza get their energy from the sun, which you get when you eat the plants
• The animals in the pepperoni ate plants that got their energy from the sun.
• The cheese on the pizza came from cows that ate plants that got their energy from the sun
• all of the above

In which organelle does cellular respiration occur?

• nucleus
• chloroplast
• chlorophyll
• mitochondria

____ is a process that releases energy without oxygen.

• respiration
• fermentation
• cellular respiration
• photosynthesis

What is one common food that is made with the help of fermentation?

• chicken
• bread
• milk
• rice

Which of the following is the correct word equation for photosynthesis?

• sunlight + water + glucose = carbon dioxide + oxygen
• sunlight + water + carbon dioxide = glucose + oxygen
• oxygen + glucose = carbon dioxide + water + energy
• oxygen + carbon dioxide = energy + water + glucose

Which of the following is the correct word equation for cellular respiration?

• sunlight + water + glucose = carbon dioxide + oxygen
• sunlight + water + carbon dioxide = glucose + oxygen
• oxygen + glucose = carbon dioxide + water + energy
• oxygen + carbon dioxide = energy + water + glucose