Photosynthesis Flashcards
What is the photosynthesis word equation?
Carbon dioxide + water → glucose + oxygen (in the presence of
light and chlorophyll).
What are the reactants of photosynthesis?
Carbon dioxide and water
CO2 and H2O
What is the product and byproduct of photosynthesis?
Main product is glucose C6H12O6
Byproduct is oxygen O2
What happens during the light-dependent reaction?
The light-dependent reaction uses light energy to split water into H+ and O and creates ATP (adenosine 5’-triphosphate) to drive the light-independent reaction.
The hydrogen is picked up by a special carrier molecule called NADPH.
The light energy is absorbed by a pigment found in the thylakoid membrane called chlorophyll.
Where does the light-dependent reaction take place?
The thylakoid membrane of the chloroplast
Where does the light-independent reaction take place?
The stroma
What happens during the light-independent phase?
NADPH and ATP are used to provide the chemical energy to make glucose in this phase. NADPH carries the hydrogen molecules produced from the light-dependent phase into the stroma. Then the hydrogens combine with CO2 to make glucose.
How do the photosynthesis reactants enter the plant?
CO2 enters via diffusion through the
stomata.
Water enters via osmosis through the
roots.
Describe the process of photosynthesis:
Photosynthesis is the process in which plants use sunlight, water, and carbon
dioxide to produce glucose and oxygen. Where solar energy from the Sun is captured and transformed into chemical energy.
Is photosynthesis an endothermic or exothermic reaction?
Endothermic reaction (energy is absorbed)
How does carbon dioxide enter the plant?
Carbon dioxide enters the plant through the stomata via diffusion.
How does water enter the plant?
Water enters via osmosis from the soil to the roots of a plant.
