Life on Earth - 3.3 Photosynthesis Flashcards
What is the first stage of photosynthesis ?
Light reaction
What happens in light reactions ?
The light energy from the sun is trapped by chlorophyll in the chloroplasts and is converted into chemical energy which is used to generate ATP
What does water split to produce ?
Hydrogen + oxygen
Where does oxygen diffuse from ?
The Cell
What is the second stage of photosynthesis ?
Carbon fixation
What is Carbon Fixation ?
Carbon fixation is a series of enzyme-controlled reactions, which use hydrogen and ATP (produced by the light reaction) with carbon dioxide to produce sugar
What is fates of sugar ?
The chemical energy in sugar is available for respiration or the sugar can be converted into other substances such as starch (storage) and cellulose (structural)
The rate of photosynthesis in a plant is restricted by 3 limiting factors ?
Light intensity
temperature
carbon dioxide concentration
How many stages of photosynthesis is there ?
2 stage process
