Photosynthesis and Energy Flow Review

What is the primary role of photosynthesis in plants?

• To produce oxygen for animals

• To convert sunlight into chemical energy

• To absorb carbon dioxide from the atmosphere

• To provide shade for the soil

Tags

OK.SCI.7.LS1.6

Which of the following is a product of photosynthesis?

• Carbon dioxide

• Water

• Glucose

• Nitrogen

Tags

OK.SCI.7.LS1.6

Explain how photosynthesis contributes to the flow of energy in an ecosystem.

• Photosynthesis decreases the energy available in an ecosystem.

• Photosynthesis converts solar energy into chemical energy stored in glucose.

• Photosynthesis releases energy in the form of heat.

• Photosynthesis uses chemical energy to produce solar energy.

Tags

OK.SCI.7.LS1.6

Describe the process by which plants use sunlight to produce food.

• Plants absorb sunlight and convert it directly into proteins.

• Plants use sunlight to break down water molecules into hydrogen and oxygen.

• Plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

• Plants use sunlight to absorb nutrients from the soil.

Tags

OK.SCI.7.LS1.6

Which of the following best describes the role of chlorophyll in photosynthesis?

• Chlorophyll absorbs water for the plant.

• Chlorophyll captures light energy from the sun.

• Chlorophyll transports nutrients within the plant.

• Chlorophyll releases oxygen into the atmosphere.

Tags

OK.SCI.7.LS1.6

How do plants and animals use the energy stored in food molecules?

• They convert it into light energy.

• They store it as water.

• They break it down through cellular respiration to release energy.

• They use it to produce carbon dioxide.

Tags

OK.SCI.7.LS1.7

What happens to glucose molecules during cellular respiration in animals?

• They are converted into oxygen and water.

• They are broken down to release energy.

• They are stored as proteins.

• They are used to absorb sunlight.

Tags

OK.SCI.7.LS1.7

Develop a model to show how food molecules are rearranged during cellular respiration.

• Food molecules are rearranged to form new proteins.

• Food molecules are broken down into carbon dioxide and water, releasing energy.

• Food molecules are converted into sunlight.

• Food molecules are stored as fat.

Tags

OK.SCI.7.LS1.7

Which of the following processes releases energy from food molecules in cells?

• Photosynthesis

• Fermentation

• Cellular respiration

• Transpiration

Tags

OK.SCI.7.LS1.7

Explain how the breakdown of food molecules supports growth in organisms.

• The breakdown of food molecules releases energy that is used for growth and repair.

• The breakdown of food molecules produces sunlight for growth.

• The breakdown of food molecules absorbs water for growth.

• The breakdown of food molecules releases oxygen for growth.

Tags

OK.SCI.7.LS1.7