Chapter 10.1.1 (Exam 2) Photosynthesis Flashcards
Photosynthesis Uses Light to Make Carbohydrates
What happens in photosynthesis?
Energy from sunlight is captured and used to convert CO2 to more complex carbon compounds
What is the chemical formula for photosynthesis?
6 CO2 + 6 H2O → C6H12O6 + 6 O2
What is the source of the O2 produced by photosynthesis?
Water
What type of reaction is photosynthesis?
Oxidation-reduction (redox)
The C atoms in CO2 begin in an oxidized state. What happens by the end of photosynthesis?
They are reduced to a carbohydrate
O atoms in H2O begin in a reduced state. What happens by the end of photosynthesis?
They are oxidized to O2
How can non-oxygenic photosynthesis occur?
Molecules other than oxygen donate the electrons
What is one example of non-oxygenic photosynthesis?
Purple sulfur bacteria use H2S
What are the two pathways of photosynthesis that occur in different parts of the chloroplast?
Light-dependent reactions
Light-independent reactions (Carbon fixation)
What is the function of light-dependent reactions?
Converts light energy to chemical energy as ATP (from ADP+Pi) and NADPH (from NADP+ + H+)
What is the function of carbon fixation?
Uses the ATP and NADPH plus CO2 to produce carbohydrates
