The Effects of Carbon Dioxide and Light on Photosynthesis Virtual Lab.pdf

The Effects of Carbon Dioxide and Light on Photosynthesis Virtual Lab.pdf

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Unformatted text preview: Name: _________________________________ Period: ______ Date: ________________ The Effects of Carbon Dioxide and Light on Photosynthesis: Virtual Lab CO2 Concentration (ppm) Procedure: 1. Go to this website: 2. View the parts of the simulation. Play with the buttons to see how they work. 3. Click the button that says “Prepare Plant” 4. Set the CO2 Concentration to 0 ppm (parts per million). 5. Set the Light Intensity to 5000 lux. 6. Choose a time limit. How many minutes do you want to record? This must stay CONSTANT throughout your experiment. (Record as one of your constants in question #3) 7. Click on the “Start” button and count how many bubbles are produced in your time limit. 8. Click the “Stop” button to stop the timer. Record your data. 9. Repeat steps 4-­‐8 for each of the scenarios. Use the tables as a guide for what factors to change. Fill in the data table below. Light Intensity (lux) 5000 15000 25000 0 300 600 1200 FACTOR #1: How does CARBON DIOXIDE (CO2) LEVEL affect the rate of photosynthesis? 1. What is the independent variable?__________________________________________________ 2. What is the dependent variable?___________________________________________________ 3. What are the constants?__________________________________________________________ 4. What is the optimal CO2 concentration?_____________________________________________ FACTOR #2: How does LIGHT INTENSITY affect the rate of photosynthesis? 1. What is the independent variable?__________________________________________________ 2. What is the dependent variable?___________________________________________________ 3. What are the constants?__________________________________________________________ 4. What is the optimal light intensity level?_____________________________________________ Name: _________________________________ Period: ______ Date: ________________ Answer the following questions for BACKGROUND information to use in your Conclusion: 1. Where does PHOTOSYNTHESIS happen in the cell? _____________________________________ 2. What color is a chloroplast? _______________________________________________________ 3. What is inside the bubbles that are being released? ____________________________________ 4. Fill in the diagram below to explain the process of photosynthesis: à____________ _____________ à___________ _____________ (2 reactants) (2 products) à ____________ (Catalyst) 5. Write the equation for photosynthesis. Conclusion—Summarize your findings Directions: Using your data and your answers from the questions above, write a conclusion paragraph to summarize your results. HOW did the factors you tested affect photosynthesis? What were the OPTIMAL factors? What happened when you used OPTIMAL factors? WHY do you think that happened? Was there any bias? (Did you have any previous ideas influencing your choices?) Cite evidence! Use specific data to support your claims. ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ...
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  • Fall '17
  • SPEARS
  • 5000  lux

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