Unit 3 Review

Zoe is studying how plants and animals interact in terms of energy. She learned that plants perform photosynthesis and animals perform cellular respiration. How are these two processes related in terms of energy, as Zoe explained to Evelyn and Aria?

• The energy captured in photosynthesis is used to power cellular respiration.

• The energy transformed in cellular respiration is used to power photosynthesis.

• Photosynthesis and respiration perform the same task in terms of energy transformation.

• Energy is not involved in either photosynthesis or cellular respiration.

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18.9

Kai, Abigail, and Mia are studying plants in their biology class. They are trying to understand the difference between photosynthesis and cellular respiration. In what way are these two processes different?

• Kai thinks that cellular respiration stores ATP, while photosynthesis releases ATP.

• Abigail believes that cellular respiration produces oxygen, while photosynthesis uses oxygen.

• Mia suggests that photosynthesis releases energy, while cellular respiration stores energy.

• They read in their textbook that photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.

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18.9

The diagram below shows the relationship between photosynthesis and cellular respiration and the organelles in which they occur. Which statement describes how photosynthesis and cellular respiration are interrelated?

• Oxygen is produced during cellular respiration and stored during photosynthesis.
• Carbon dioxide and water released by cellular respiration are used in photosynthesis.
• Photosynthesis releases the energy that is stored during the process of cellular respiration.
• Glucose is used during cellular respiration to produce food that is broken down during photosynthesis.

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18.9

Abigail, Aiden, and Lily are studying a diagram in their biology class that represents the relationship between photosynthesis and cellular respiration. They noticed numbered boxes in the diagram. According to the diagram, which of the following do these numbered boxes represent?

• 1 - water; 2 - nitrogen

• 1 - nitrogen; 2 - oxygen

• 1 - oxygen; 2 - carbon dioxide

• 1 - carbon dioxide; 2 – water

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18.9

Two test tubes were filled with a solution of bromthymol blue. A student exhaled through a straw into each tube, and the bromthymol blue turned yellow. An aquatic green plant was placed into each tube, and the tubes were corked. One tube was placed in the dark, and one was placed in direct sunlight. The yellow solution in the tube in sunlight turned blue, while the one in the dark remained yellow. Which statement best explains why the solution in the tube placed in sunlight returned to a blue color?

• Oxygen was produced by photosynthesis.
• Carbon dioxide was removed by photosynthesis.
• Carbon dioxide was produced by respiration.
• Oxygen was removed by respiration.

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18.7

Which of the following diagrams accurately represents the use of gases in both cellular respiration and photosynthesis?

• A
• B
• C
• D

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18.9

During a biology class, Charlotte, Benjamin, and Liam learned about the process of photosynthesis. Which gas is removed from the atmosphere during photosynthesis?

• hydrogen

• oxygen

• nitrogen

• carbon dioxide

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18.7

A potted plant is placed inside a clear, sealed vacuum container that has water pumped into it on a regular basis. The container is placed in the sun and the plant’s growth is monitored. Which statement best describes what will most likely happen to the plant over time?

• The plant will grow faster because it is sheltered from the wind.
• The plant will die because it does not have oxygen for photosynthesis.
• The plant will die because it does not have carbon dioxide for photosynthesis
• The plant will grow at a slower rate because it requires more water.

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18.7

Mike has four aquatic plants of the same size and the same species. He submerges the plants in a separate beaker filled with 200 ml of water. She then sets each beaker under a different intensity of light. Mike observes that, of the four plants, the plant in the beaker under the most intense light gives off the most gas bubbles in a 20 minute period. Which of the following statements best explains Mike’s observations?

• Cells decompose most quickly under the most intense light.
• Water evaporates from plants faster under the most intense light.
• Photosynthesis occurs at the highest rate under the most intense light.
• Gases in the leaves of plants expand most under the most intense light

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18.7

During a biology class, Kai, Aria, and Anika are discussing the reactants of photosynthesis. Which of the following are the reactants of photosynthesis?

• water and glucose

• glucose and carbon dioxide

• carbon dioxide and water

• oxygen and water

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18.7