Biology 8.1
Terms
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- Chloroplast
- cellular organelle where photosynthesis takes place
- mesophyll
- where chloroplasts are concentrated inner layer of tissue)
- stomata
- pores found on the surface of the leaf
- stroma
- thick fluid enclosed by the inner membrane (in chloroplast)
- thylakoids
- disk shaped sacs suspended in the stroma, has a membrane surrounding interior space
- grana
- stacks of thylakoids
- photosynthesis
- 6co2 + 6h2o --> c6h12o6 + 602
- Light reactions
- convert the energy in sunlight to chemical energy
- light reactions - chlorophyll
- captures light energy
- light reactions - chloroplasts
- use captured energy to remove electrons from water
- light reactions - oxygen
- oxygen split into oxygen and hydrogen ions OXYGEN WASTE PRODUCT OF PHOTOSYNTHESIS
- light reactions - chloroplasts (2nd)
- chloroplasts use electrons and hydrogen ions for making NADPH
- light reactions - overall
- light energy --> chemical energy = NADPH and ATP
- Calvin cycle
- makes sugar from the atoms in carbon dioxide plus the hydrogen ions and high energy electrons carried by NADPH
- Calvin cycle - enzymes
- enzymes located outside the thylakoids and dissolved in the stroma
- Calvin cycle - overall
- does NOT need: light to begin DOES need: ATP and NADPH that is made by light reaction