Photosynthesis Flashcards
What is photosynthesis?
A PROCESS CARRIED OUT BY GREEN PLANTS TO PRODUCE FOOD (SUGAR) USING SUNLIGHT
The overall word equation forPhotosynthesis
CARBON DIOXIDE —> SUGAR
+ WATER + OXYGEN
two raw materials needed for photosynthesis
CO2 + H20
The products of photosynthesis
SUGAR AND OXYGEN
The two essential factors for photosynthesis
LIGHT ENERGY
CHLOROPHYLL
In which leaf cell structure is chlorophyll found?
IN CHLOROPLASTS
What is the function of
chlorophyll in photosynthesis?
TRAPS LIGHT ENERGY
What type of energy is light
energy converted to during
photosynthesis?
CHEMICAL ENERGY
What chemical substances control the reactions in photosynthesis
ENZYMES
The name of the first stage of photosynthesis
LIGHT REACTIONS
The raw material(s) for the light reaction
WATER
The product(s) of the light
reaction
HYDROGEN
OXYGEN
ATP
What happens to the oxygen
produced in the light reaction?
OXYGEN DIFFUSES FROM THE CELL INTO THE ATMOSPHERE
What happens to the hydrogen
produced in the light reaction?
USED IN CARBON FIXATION
The name for the second stage of photosynthesis
CARBON FIXATION
The raw material(s) for carbon
Fixation
CARBON DIOXIDE
HYDROGEN
ATP
The product(s) of carbon fixation
SUGAR
State the three fates of the
sugar produced during carbon
Fixation
AVAILABLE FOR RESPIRATION, CONVERTED TO STARCH (STORAGE) AND CELLULOSE (STRUCTURAL)
Name the three factors which can affect the rate of photosynthesis
LIGHT INTENSITY
TEMPERATURE
CO2 CONCENTRATION
What effect will a reduced rate of photosynthesis have on a plant?
THE GROWTH OF THE PLANT WILL BE REDUCED
describe what happens in the light reactions
LIGHT ENERGY ABSORBED BY CHLOROPHYLL IS USED TO SPLIT WATER MOLECULES INTO HYDROGEN AND OXYGEN
ATP IS ALSO PRODUCED
OXYGEN DIFFUSES FROM THE CELL AND IS RELEASED INTO THE ATMOSPHERE
HYDROGEN AND ATP IS USED IN CARBON FIXATION
describe what happens during carbon fixation
THE HYDROGEN IS COMBINED WITH co2 FROM THE AIR TO MAKE SUGAR
ATP PROVIDES THE ENERGY NEEDED FOR PHOTOSYNTHESIS
What can the sugar from photosynthesis be used for?
RESPIRATION
CONVERTED TO CELLULOSE (STRUCTURE)
CONVERTED TO STARCH (STORAGE)
how can you measure the rate of photosynthesis
MEASURE THE UPTAKE OF CO2
