5 Written Questions

1. an alternative pathway, used by corn, sugar cane, and crabgrass for carbon fixation in which CO2 is bonded into four-carbon compounds in specialized cells then transported to other cells for release and use in the Calvin Cycle
2. adenosine diphosphate, a lower energy form of ATP
3. small pores on the undersurface of leaves that can be opened and closed to limit water loss
4. a molecule in the thylakoid membrane that accepts the electrons given up by chlorophyll a
5. a series of molecules in the thylakoid membrane that transfers the electrons from one molecule to another, harnessing the available energy to move protons into the thylakoid

5 Matching Questions

1. photosystem I and II
2. biochemical pathways
3. wavelength
4. chemiosmosis
5. RuBP

1. a a process that relies on a concentration gradient of protons across the thylakoid membrane
2. b two types of photosystems with similar types of pigments but different roles in the light reactions of photosynthesis
3. c complex series of chemical reactions in which the product of one reaction is used in the next reaction
4. d the distance between crests in light waves
5. e a five-carbon molecule which is combined with CO2 in the first step of the Calvin Cycle

5 Multiple Choice Questions

1. solution inside chloroplasts surrounding the thylakoid membrane system
   1. RuBP
   2. stroma
   3. stomata
   4. grana
2. plant species that fix carbon exclusively through the Calvin Cycle
   1. ATP
   2. grana
   3. CAM
   4. C3 plants
3. a multifunction protein that harnesses the potential energy in the proton concentration gradient to synthesise ATP from ADP and a phosphate functional group
   1. C4 pathway
   2. photosynthesis
   3. ATP
   4. ATP synthase
4. capturing part of the energy in light and storing it in organic compounds
   1. ATP synthase
   2. photosynthesis
   3. chemiosmosis
   4. photosystem
5. the second biochemical pathway in photosynthesis which uses the energy stored in ATP and NADPH during the light reactions to produce organic compounds
   1. Calvin Cycle
   2. chlorophyls
   3. CAM
   4. carotenoids

5 True/False Questions

1. carbon fixation → compounds found in the thylakoid membrane that act as accessory pigments

   True        False

2. grana → interconnected stacks of thylakoids

   True        False

3. PGAL → a three-carbon molecule resulting from the addition of a proton in step 2 of the Calvin Cycle

   True        False

4. thylakoids → flattened sac-like membranes inside chloroplasts

   True        False

5. photosystem → capturing part of the energy in light and storing it in organic compounds

   True        False