Gizmo: Photosynthesis Lab - Unfreed - Name Adrienne Unfreed Date Student Exploration Photosynthesis Lab Vocabulary carbon dioxide chlorophyll glucose

# Gizmo: Photosynthesis Lab - Unfreed - Name Adrienne Unfreed...

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Name: Adrienne Unfreed Date: 12/4/17 Student Exploration: Photosynthesis Lab Vocabulary: carbon dioxide, chlorophyll, glucose, limiting factor, nanometer, photosynthesis, wavelength Prior Knowledge Questions (Do these BEFORE using the Gizmo.) · To survive, what gas do we need to breathe in? We need to breathe in oxygen to survive. · Where is this gas produced? This gas is produced by plants. Gizmo Warm-up During photosynthesis , plants use the energy of light to produce glucose (C 6 H 12 O 6 ) from carbon dioxide (CO 2 ), and water (H 2 O). 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? The bubbles are groups of oxygen molecules. 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? As the light intensity increases, the amount of oxygen flow increases. 3. Experiment with the vertical Temperature slider (upper left) and the CO 2 level slider. A. How does temperature affect oxygen production?
The amount of oxygen produced increases as the temperature increases until it reaches a certain point before it begins to decrease. B. How does CO 2 level affect oxygen production? As the CO 2 level increases, the amount of oxygen production increases. C. How does oxygen production relate to the rate of photosynthesis? If the rate of photosynthesis is greater, than the production of oxygen will increase. Activity A: Ideal conditions Get the Gizmo ready : · Be sure that the BAR CHART tab is selected.

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