Photosynthesis Quiz

Oxygenic photosynthesis = Produces oxygen as a byproduct and stores chemical energy in carbohydrate molecules Photoautotrophs = Organisms that perform photosynthesis Endergonic reaction = Synthesizes carbohydrate molecules from carbon dioxide and water Anoxygenic photosynthesis = Uses bacteriochlorophyll to split hydrogen sulfide as a reductant

Plants, algae, and cyanobacteria = Perform photosynthesis Bacteria = Some also perform anoxygenic photosynthesis Photoautotrophs = Organisms that perform photosynthesis Complex life on Earth = Relies on biological energy produced by photosynthesis

Carbohydrate molecules = Store chemical energy produced by photosynthesis Sugars, starch, glycogen, and cellulose = Examples of carbohydrate molecules synthesized from endergonic reaction Carbon dioxide and water = Reactants in the endergonic reaction to synthesize carbohydrate molecules Oxygen = Produced as a byproduct in oxygenic photosynthesis

Photosynthesis = Largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere Oxygenic photosynthesis = Produces oxygen as a byproduct, contributing to the Earth's atmosphere Anoxygenic photosynthesis = Does not contribute to oxygen production in the Earth's atmosphere Bacteria = Some perform anoxygenic photosynthesis, which does not contribute to oxygen production in the Earth's atmosphere

Photosynthesis = Supplies most of the biological energy necessary for complex life on Earth Carbohydrate molecules = Store chemical energy produced by photosynthesis and fuel the organism's activities Cellular respiration = Metabolizes organic compounds to fuel the organism's activities Complex life on Earth = Relies on the biological energy produced by photosynthesis