Name Date Per.
1) Distinguish between the following terms: autotroph, photoautotroph, chemoautotroph, heterotroph, and decomposer. Give an example of each.
2a) What parts of a plant have chloroplasts? In which cells are chloroplasts mainly found?
2b) How many chloroplasts are found per square millimeter of leaf surface? How many chloroplasts are found in each mesophyll cell?
2c) How do the cells of a leaf accomplish gas exchange (i.e. O
2
and CO
2
)? How do leaf cells receive water and export sugar?
2d) What is CHLOROPHYLL ? Specifically, where is chlorophyll found?
3) Sketch and label a chloroplast.
4a) Write the NET chemical equation for photosynthesis.
4b) How does this reaction compare to that of cellular respiration?

5a) Summarize the experimental results of C.B. van Niel. (van Niel’s work is summarized in the text on p.
187) What did he hypothesize was the source of oxygen gas in photosynthesis? Why?
5b) How did scientists later confirm van Niel’s hypothesis? (Summarize their experiments and results)
6) In the space below, create a chart in which you compare the two major phases of photosynthesis: the light reactions and the Calvin cycle. In your chart include: the location (be specific!), the main function, and the inputs/outputs of each.
7) What 2 energy molecules are generated during the light reactions?
8) What is meant by PHOTOPHOSPHORYLATION ?
9) How is the ATP generated during photosynthesis different (in terms of use) from the ATP generated in cellular respiration?
10) WHAT IF?
The Calvin cycle requires ATP and NADPH, products of the light reactions. If a classmate asserted that the l ight reactions don’t depend on the Calvin cycle and, with continual light, could just keep on producing ATP and NADPH, how would you respond?? (HINT study figure 10.6!!)