unit 4 review

unit 4 review

Multiple Choice

How can you tell that the Elodea plant in the test tubes is going through photosynthesis?

• If the Elodea has been going through photosynthesis for the last 24 hours, the water should be more yellow-green because the carbon dioxide level increased when photosynthesis occurred.

• If the Elodea has been going through photosynthesis for the last 24 hours, the water should be more blue because the carbon dioxide level increased when photosynthesis occurred.

• If the Elodea has been going through photosynthesis for the last 24 hours, the water should be more yellow-green because the carbon dioxide level decreased when photosynthesis occurred.

• If the Elodea has been going through photosynthesis for the last 24 hours, the water should be more blue because the carbon dioxide level decreased when photosynthesis occurred.

Multiple Choice

A chemist is studying how different abiotic factors are broken down in our environment. He is especially interested in what happens to the carbon compounds (and other chemicals) that are released when a dead animal decomposes. When a carcass (dead body) decomposes, all of the liquid remains are either ingested by decomposers (like bacteria) or scavengers (like other animals), or the liquids soak into the soil or evaporate into the environment. This means the soil around the carcass will increase in the amount of carbon, nitrogen, and other nutrients. Once all that is left are dry remains (like bones) the plants around the carcass will begin to grow again because the nutrient levels in the soil are reaching their normal levels again. Eventually, the mass that remains in the soil will be changed into fossil fuels that humans can burn for electricity. Which of the following shows the correct path that the matter in this story follows

• Mass released from carcass enters soil ---> carbon and other nutrients in soil increase ---> fossil fuels are formed that humans use to burn and create an energy resource

• mass released from carcass enters soil ---> carbon and other nutrients in soil decrease ---> no fossil fuels produced

• mass released from carcass enters the atmosphere ---> carbon and other nutrients in soil decrease ---> decreasing amount of fossil fuels

• mass released from carcass enters the atmosphere ---> carbon and other nutrients in soil increase ---> fossil fuels formed that humans can use to burn and create an energy resource

Multiple Choice

The processes of photosynthesis and cellular respiration are closely related. All living organisms use the process of cellular respiration to get energy, but only plants and a few other organisms that have chloroplasts use the process of photosynthesis. What can you assume from this statement:

• Photosynthesis is used by plants to produce oxygen. This oxygen is used by both plants and animals for the process of cellular respiration. Carbon dioxide is released as a waste product of cellular respiration and then cycled back to plants to use in the process of photosynthesis.

• Photosynthesis is used by plants to produce carbon dioxide. This carbon dioxide is used by both plants and animals for the process of cellular respiration. Oxygen is released as a waste product of cellular respiration and then cycled back to plants to use in the process of photosynthesis.

• Cellular respiration is used by plants to produce carbon dioxide. This carbon dioxide is used by both plants and animals for the process of photosynthesis. Oxygen is released as a waste product of cellular respiration and then cycled back to plants to use in the process of photosynthesis.

• Photosynthesis is used by plants to produce oxygen. This carbon dioxide is used by both plants only for the process of cellular respiration. Oxygen is released as a waste product of cellular respiration and then cycled back to plants to use in the process of photosynthesis.

Multiple Select

Think about the processes of photosynthesis and cellular respiration. What are the reactants in each reaction? What are the products? Evergreen trees do not lose their leaves in the winter like other trees do. Some evergreen trees, like Fir trees, are important sources of food for animals. For example, some moose rely on Fir trees for food all year. The actual number of trees varies from year to year. What impact could the changing number of trees have on the carbon / oxygen cycle? (pick 2 answers)

• If the number of trees increases, the amount of oxygen in the atmosphere decreases.

• If the number of trees increases, the amount of carbon dioxide in the atmosphere does not change

• If the number of trees increases, the amount of carbon dioxide and oxygen in the atmosphere increases.

• If the number of trees increases, the amount of oxygen in the atmosphere increases..

• If the number of trees increases, the amount of carbon dioxide in the atmosphere decreases..

Multiple Choice

How is CO2 (carbon dioxide) converted into a molecule that plants (and animals) can use for food?

• Methane is burned by oxygen resulting in water and carbon dioxide.

• Glucose and oxygen are converted into water and carbon dioxide.

• Carbon dioxide is broken down by water and produces glucose and oxygen.

• Hydrogen and oxygen molecules react together to produce water.

Multiple Choice

How would matter cycle between the plants and the fish in the aquarium?

• The fish release oxygen, which is used by the plants for photosynthesis.

• The fish release carbon dioxide, which is used by the plants for photosynthesis.

• The plants release vitamins that the fish eat.

• The plants release carbon dioxide that the fish use.

Read for the next two questions. Questions 16 and 18 from the study guide are not on this Quizziz. I will post a short video explaining those tomorrow.

Kyle is growing plants in his greenhouse for large distribution companies such as Home Depot and Lowe’s. If Kyle grows his plants fast enough, then he can deliver his plants to the companies before his competitors can. Plants use the process of photosynthesis to make food and cellular respiration to make energy from the food to grow. Plants absorb solar energy, change it into chemical energy and store it as food.

Multiple Choice

Kyle wants to decrease the amount of time it takes to grow his plants so that he can deliver his products to companies faster than his competitors. He recently added a compost pile with worms in order to increase the amount of CO2 through aerobic respiration. Which of the following might you expect to see happening?

• The compost pile will cause the CO2 to increase too rapidly and photosynthesis will not occur.

• The worms add more CO2 to the process through cellular respiration.

• The extra CO2 increases the rate of cellular respiration in the plants.

• The worms will add more O2 to the process through cellular respiration.

Multiple Choice

Which explanation best demonstrates how matter moves between plants and animals?

• Matter and energy flow from consumers to producers. Through photosynthesis, consumers make their own food and are a source of energy for primary consumers. Matter and energy flow from consumers as a waste and then decomposes into a fertilizer that supports plant growth.

• Matter and energy flow from producers to consumers. Through cellular respiration, producers make their own food and are a source of energy for primary consumers. Matter and energy flow from consumers as a waste and then decomposes into a fertilizer that supports plant growth.

• Energy flows from the sun to producers. Through cellular respiration, producers make their own food and are a source of energy for primary consumers. Matter and energy flow from consumers as a waste and then decomposes into a fertilizer that supports plant growth.

• Energy flows from the sun to producers. Through the process of photosynthesis, producers make their own food and are a source of energy for primary consumers. Matter and energy flow from consumers as waste and then decomposes. This acts as a fertilizer to support plant growth.

Important Reminders!!!

• Tomorrow (Tuesday) is a study day!

• The test is Wednesday during your regular classtime.

• YOU HAVE TO BE ON THE ZOOM TO TAKE THE TEST!

• Watch PLP and Google Classroom everyday for your announcements.

• Email me or message me through PLP if you need anything.