Cellular Respiration and Photosynthesis

1. What is chlorophyll and how does it help plants?

• A.Chlorophyll is a pigment that absorbs light energy and makes glucose.

• B.Chlorophyll is a protein that changes shape in the presence of sunlight.

• C.Chlorophyll is a receptor that binds carbon dioxide when energized by light

• D.Chlorophyll is an enzyme that catalyzes the production of glucose when exposed to light.

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Which type of organism would MOST likely benefit directly from increased levels of CO2?

• mushroom

• tree

• bird

• fish

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Which of the following is produced during the process of cellular respiration?

• carbon dioxide

• sodium chloride

• oxygen

• sugar

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Which two things are produced when a plant breaks down sugar to release energy?

• oxygen and food

• carbon dioxide and food

• oxygen and carbon dioxide

• carbon dioxide and water

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Which statement accurately describes an interaction between plants and animals?

• Animals release CO2, required for photosynthesis.

• Animals release O2, required for plant survival.

• Plants provide humans with atmospheric nitrogen.

• Plants provide humans with CO2 for respiration.

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People take in and release gases from the air when they breathe. Which exhaled gas is a waste product of respiration?

• helium

• oxygen

• carbon dioxide

• hydrogen

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The ingredients of photosynthesis are

• sugar and water.
• sugar and oxygen.
• carbon dioxide and water.
• carbon dioxide and oxygen.

What are the products of photosynthesis?

• Carbon dioxide and water
• Carbon dioxide and oxygen
• Glucose and oxygen
• Glucose and water

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Which gas is removed from the atmosphere during photosynthesis?

• hydrogen
• oxygen
• nitrogen
• carbon dioxide

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What gas is released by plants during photosynthesis?

• sulfur
• carbon dioxide
• oxygen
• hydrogen

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