Question

1. Refer to Model 1.

a. In what cell organelle does photosynthesis occur?

b. What are three reactants (starting materials) needed for photosynthesis?

c. What are two products (ending materials) of photosynthesis?


2. Refer to Model 1.
a. In what cell organelle does cellular respiration occur?

b. What are two reactants needed for cellular respiration?

c. What are three products of cellular respiration?

3. What four substances are recycled during photosynthesis and respiration?

4. What is the one component in photosynthesis that is not recycled and must be constantly available?

5. Are chloroplasts found in most plant cells? Explain.

6. Are mitochondria found in most plant cells? Explain.

7. Are chloroplasts found in animal cells? Explain.

8. Are mitochondria found in animal cells? Explain.


9. Write a grammatically correct sentence that compares the reactants and products of photosynthesis with the reactants and products of respiration. Be ready to share your sentence with the class.


10. As a group carefully consider and discuss the following statement: “Plants can survive on their own, because they make their own food. Animals can’t survive on their own but need plants for survival.” Do you agree with this statement? Why or why not? Can you come to a consensus as a group? Be ready to discuss your group’s response to this statement.



11. As a group, make a quick list of the foods that you ate during your last meal. Hypothesize what would happen to the supply of those foods if the sun’s energy was no longer available.


12. Explain how the energy used by an athlete during a football game comes from the energy of sunlight

Answer 1

1a. In the chloroplasts of plant cells

1b. Water, carbon dioxide, and sunlight

1c. Oxygen and glucose

2a. In the mitochondria of plant and animal cells

2b. Glucose and oxygen

2c. Carbon dioxide, water, and energy (in the form of ATP)

3. Water, carbon dioxide, and oxygen are recycled during photosynthesis and respiration.

4. Sunlight is the one component in photosynthesis that is not recycled and must be constantly available.

5. Chloroplasts are found in most plant cells because they are the organelles responsible for photosynthesis, which is necessary for the production of energy and nutrients for the plant.

6. Mitochondria are found in most plant cells because they are the organelles responsible for cellular respiration, which is necessary for the production of energy for the plant.

7. Chloroplasts are not found in animal cells because they do not have the ability to perform photosynthesis.

8. Mitochondria are found in animal cells because they are responsible for cellular respiration, which is necessary for the production of energy for the animal.

9. Photosynthesis uses water, carbon dioxide, and sunlight as reactants to produce oxygen and glucose, while cellular respiration uses glucose and oxygen as reactants to produce carbon dioxide, water, and energy.

10. It is not necessarily accurate to say that plants can survive on their own while animals cannot. Both plants and animals rely on the sun's energy to survive, but plants are able to produce their own food through photosynthesis while animals must obtain energy and nutrients from other sources, such as by eating plants or other animals.

11. If the sun's energy were no longer available, the supply of the foods that you ate during your last meal would be greatly reduced or eliminated, as plants would not be able to produce energy through photosynthesis and animals would not have a source of food.

12. The energy used by an athlete during a football game comes from the energy of sunlight because the energy stored in the food that the athlete eats was originally produced by plants through photosynthesis, which relies on the energy of sunlight. This energy is then transferred to the athlete through the process of cellular respiration, which converts the energy stored in food into usable energy for the body.