Question

students in a biology class conducted an experiment to determine the effect of temperature on photosynthesis in a plant. they place an elodea plant into a tube filled with water, place the tube under light and slowly increase the temperature of the water. they record their results in a graph as shown. photosynthesis vs. temperature experiment 5. part a: which statement is supported by the data in the graph? a. the rate of oxygen production is greatest in section m. b. the rate of oxygen production is lowest in section m. c. the production of water molecules is greatest in section l. d. the number of carbon - dioxide molecules in the beaker is greatest in section k. 6. part b: which of the following supports your answer in part a? a. the products released in photosynthesis directly depend on the rate of photosynthesis. b. the products in photosynthesis directly depend on the rate of respiration in cells. c. the product in cellular respiration is dependent on the products of photosynthesis. d. the higher the rate of photosynthesis gets, the less products are produced. alice was participating in a photosynthesis lab for science class. the lab procedures instructed alice to place a test tube containing water, a sprig of elodea (a common aquarium plant), and 10 g of sodium bicarbonate into a test tube rack. she was then instructed to place the test tube in front of a strong light source for one minute. alice noticed bubbles forming on the leaves of the elodea. 7. what is the most logical explanation for why alice saw bubbles forming on the leaves of the elodea? a. the bubbles formed as the elodea plant released oxygen from the elodea leaves. b. the bubbles formed from the release of water molecules from the elodea leaves. c. the bubbles formed as a result of the hydrogen from the sodium bicarbonate mixture diffusing into the elodea leaves. d. the bubbles formed as the elodea plant released carbon dioxide from the elodea leaves. 8. what happens to the glucose levels in an organism when there is a need for a large amount of energy to perform a specific task such as exercising? a. it will increase because the atp promotes the production of glucose in the mitochondria. b. it will decrease because for atp to be produced, glucose is needed. c. it will increase because the more atp is needed, the more glucose will be produced. d. it will decrease because atp is used more than glucose.

Explanation:

Step1: Analyze the photosynthesis - rate graph

The rate of photosynthesis is related to the rate of oxygen production. In section M of the graph, the rate of photosynthesis (y - axis) is at its maximum value for the given temperature range (x - axis). Since oxygen is a product of photosynthesis, the rate of oxygen production is greatest in section M.

Step2: Evaluate option A for Part A

Option A states that the rate of oxygen production is greatest in section M. This is consistent with our analysis of the graph as the higher the rate of photosynthesis, the more oxygen is produced.

Step3: Evaluate option B for Part A

Option B says the rate of oxygen production is lowest in section M, which is incorrect as the graph shows a peak in the rate of photosynthesis (and thus oxygen production) in section M.

Step4: Evaluate option C for Part A

Option C mentions the production of water molecules in section L. However, the graph is about the rate of photosynthesis and oxygen production, and there is no indication that water - molecule production is greatest in section L. Also, water is not the main focus of the graph's data.

Step5: Evaluate option D for Part A

Option D refers to the number of carbon - dioxide molecules in section K. But the graph is about the rate of photosynthesis and oxygen production, not the amount of carbon - dioxide in different sections. Carbon - dioxide is a reactant in photosynthesis, and the graph does not provide information about its quantity in different sections.

Step6: Analyze Part B

For Part B, we need to support the answer in Part A. The products released in photosynthesis (such as oxygen) directly depend on the rate of photosynthesis. Option A in Part B correctly states this relationship.

Step7: Evaluate option B for Part B

Option B in Part B is a repetition of option A in Part B without adding any new relevant information.

Step8: Evaluate option C for Part B

Option C in Part B refers to cellular respiration, which is not relevant to supporting the answer about photosynthesis in Part A.

Step9: Evaluate option D for Part B

Option D in Part B has an incorrect statement as the higher the rate of photosynthesis, the more products are produced, not less.

Step10: Analyze question 7

In question 7, during photosynthesis, plants release oxygen as a by - product. When Alice saw bubbles forming on the leaves of the elodea, it was most likely due to the release of oxygen from the elodea leaves. Option A is correct.

Step11: Evaluate option B for question 7

Option B is incorrect because water molecules are not released in the form of bubbles during photosynthesis in this context.

Step12: Evaluate option C for question 7

Option C is incorrect as hydrogen from sodium bicarbonate is not the cause of the bubbles. Sodium bicarbonate provides carbon - dioxide for photosynthesis, not hydrogen in a way that would form bubbles on the leaves.

Step13: Evaluate option D for question 7

Option D is incorrect because plants take in carbon - dioxide during photosynthesis, not release it in the form of bubbles from the leaves during this experiment.

Step14: Analyze question 8

When an organism needs to perform a task like exercising, it requires energy in the form of ATP. ATP is produced through cellular respiration, which uses glucose as a substrate. So, the glucose levels in an organism will decrease because glucose is needed to produce ATP. Option B is correct.

Step15: Evaluate option A for question 8

Option A is incorrect because ATP does not promote the production of glucose in the mitochondria. Instead, glucose is broken down to produce ATP in the mitochondria.

Step16: Evaluate option C for question 8

Option C is incorrect because more ATP need means more glucose will be consumed, not produced.

Step17: Evaluate option D for question 8

Option D has an incorrect reasoning. ATP is produced from glucose, and glucose levels decrease because glucose is used to make ATP, not because ATP is used more than glucose in a non - related way.

Answer:

1. A. The rate of oxygen production is greatest in section M.
2. A. The products released in Photosynthesis directly depend on the rate of Photosynthesis.
3. A. The bubbles formed as the elodea plant released oxygen from the elodea leaves.
4. B. It will decrease because for ATP to be produced, glucose is needed.