Part A. Making Visual Connections with the Textbook (5 points)
You can answer these in a Word document, indicating the question number followed by your answer.
Below is the Absorption Spectrum of Photosynthesis. As your textbook explains, plants have a number of light-absorbing pigments, including chlorophylls. These pigments absorb wavelengths of light depending on the chemical make-up of each pigment. Remember, these wavelengths have energy associated with them. When you measure how much light is absorbed over a range of wavelengths, you generate an absorption spectrum.
Figure 1 Absorption Spectrum of Photosynthesis
1. What color does chlorophyll appear to our eyes? What color would carotenoids appear to us?
2. The X-axis (horizontal) of the graph contains colors. What do those colors represent?
3. Does chlorophyll absorb much light of the wavelengths that correlate with the color you chose for chlorophyll? (For example, if you said chlorophylls appear violet to us, does chlorophyll absorb violet wavelengths to a great extent?)
4. What does your answer to Question #3 indicate about the colors we see? (Note: wavelengths are either absorbed by a substance or reflected back/transmitted through)
5. Based on Figure 1, if you wanted your plants to have maximal growth, what color(s) of light bulbs would you use?
6. As the diagram in your textbook suggests, “white” light is a mixture of all of the wavelengths of the visible portion of the spectrum. If you lived in a cold climate, what color should your roof be to maximize heat absorption? Explain.
7. Do the Calvin Cycle Reactions directly use sunlight? Explain.
8. Do the Calvin Cycle Reactions indirectly depend on sunlight? Explain.
9. If you did an Absorption Spectrum of Cellular Respiration for your cells, how similar to Figure 1 would it be?
Explain.
Part B. Connecting the Content (15 points)
This Activity asks you to compare and contrast Photosynthesis and Cellular Respiration by filling in the following figure (graphic organizer). Note that one page is “Compare” and one page is “Contrast.” Recall that “compare” means to find similarities, while “contrast” means to explore differences. List the item that you are comparing or contrasting in the left column, and then give the specifics in the next two columns. I have provided an example of a comparison in the first row. I encourage you to provide as many details as possible, since this activity is to help you learn the information. I have provided 10 rows but you can use more or less depending on what you need to completely address this Activity.
You can fill in the pages below and save them, along with your answers to Part A, to your computer and then attach the file in Blackboard.
Type Item for comparison
in the boxes below
Produce ATP
Light reactions Glycolysis, Krebs cycle, Electron Transport
Type Item for comparison
in the boxes below
1 answer