Assignment IV.3 Photosynthesis Lab Simulation.

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To survive, what gas do we need to breathe in? Oxygen  Where is this gas produced? Plants Gizmo Warm-up During photosynthesis, plants use the energy of light to produce glucose (C6H12O6) from c... arbon dioxide (CO2), and water (H2O). Glucose is a simple sugar that plants use for energy and as a building block for larger molecules. A by-product of photosynthesis is oxygen. Plants use some of the oxygen they produce, but most of it is released. In the Photosynthesis Lab Gizmo™, you can monitor the rate of photosynthesis by measuring oxygen production. 1. Observe the left pane closely. What do you think the bubbles are? Oxygen being produced 2. Select the BAR CHART tab. On the graph, notice the Oxygen production bar. Move the Light intensity slider back and forth. How does light intensity affect oxygen production? The less light there is the less oxygen is produced, but the more light there is the more oxygen is produced. 3. Experiment with the vertical Temperature slider (upper left) and the horizontal CO2 slider. A. How does temperature affect oxygen production? If it’s too cold no oxygen is produced, if it’s too hot no oxygen is produced as well, it has to be in the middle. B. How does CO2 level affect oxygen production? The less CO2 the less oxygen is made, but the more there is the more oxygen is made. C. How does oxygen production relate to the rate of photosynthesis? You need the perfect temp and environment to create oxygen just like with photosynthesis, so if oxygen is slowed down the photosynthesis slows down. [Show More]

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