Which gas is released during the light reactions of photosynthesis?
A. Carbon dioxide gas
B. Oxygen gas
C. Nitrogen gas
D. Methane gas



A species of bacteria is found deep within the Earth’s crust. Which process will the bacteria use to obtain energy?
A. Cellular Respiration
B. Photosynthesis
C. Lactic Acid Fermentation
D. Alcoholic Fermentation

Which of the following is not a reactant needed for photosynthesis?
A. Sunlight
B. Oxygen
C. Carbon Dioxide
D. Water