Chapter 6 – Where it Starts - Photosynthesis
* Section 6.1 – Overview of Photosynthesis
o Apply the terms autotrophs and heterotrophs to the previouslylearned terms of producer and consumer. Going forward, autotrophsand heterotrophs are the terms you should use.
o How does the textbook define photosynthesis? From this textbookdefinition, what is the purpose (useful product) ofphotosynthesis?
o What are the names of each of the two sets of reactions in whichphotosynthesis occurs?
o Memorize the summary equation of photosynthesis. What goes in(reactants)? What comes out (products)?
o Be able to label the main parts of a chloroplast (figure 6.3 ofyour textbook)
o Where does the first set of photosynthetic reactions occur in achloroplast? Where in the chloroplast does the last set ofreactions occur?
* Section 6.2 – Sunlight as an Energy Source
o Explain the experiment by Theodor Engelmann. How did it work(Describe the set up)? What did he discover?
o What is a pigment? How is it involved in photosynthesis?
o Which pigment is most common in plants?
o What is an accessory pigment? How can this describe why manyleaves change color in autumn?
* Section 6.3 – Light-Dependent Reactions
o What is a photosystem?
o In the non-cyclic pathway of light-dependent reactions, how manytimes is light required? Â Â
o Look at figure 6.8 in your textbook (light-dependent non cyclicpathway). Understand that all of these motions and steps areworking to build up Hydrogen ions inside the thylakoid compartmentin large amounts, so that they naturally want to diffuse out ofthis space (like a inflated balloon wanting to burst). When thehydrogens flow out, they flow through the ATP synthase enzyme, andthe flow of the ions powers the ATP synthase enzyme to do work.What work is it actually doing?
o Calvin-Benson Cycle (aka – light independent reactions). Whatgoes in at the beginning? What comes out? Where do the carbon atomsin the sugar that is produced in photosynthesis come from (where dothe plants get the carbon atoms)?
o What are stomata and why are they important for plants?
o Where do you find C4 plants? How about CAM plants? How do each ofthese types of plants perform photosynthesis differently so thatthey can survive in their environments?
