Cells - Photosynthesis Flashcards
What is photosynthesis a series of and in how many stages?
Photosynthesis is a series or enzyme-controlled reactions in two stages.
What is the name of the first stage of photosynthesis?
The first stage of photosynthesis is the light-dependent stage
What happens during the light-dependent stage?
During the light-dependent stage, water molecules are split to produce hydrogen and oxygen. Excess oxygen diffuses from chloroplasts and out of the cell.
What is the second stage of photosynthesis?
The second stage of photosynthesis is the carbon fixation stage
What happens during the carbon fixation stage?
In the carbon fixation stage, hydrogen from the light dependent stage is combined with carbon dioxide to produce sugar
In the carbon fixation stage, what energy is used in the production of sugar?
In the carbon fixation stage, energy from ATP is used in the production of sugar
When can the chemical energy in sugar be released?
The chemical energy in sugar can be released during respiration
What happens to sugar not used in respiration?
Sugar not used in respiration can be converted to plant products such as starch or cellulose
What does starch act as,
And what is cellulose the main component of?
Starch acts as a store for energy in plants
While cellulose is a main chemical component of plant cell walls
What is a limiting factor?
A limiting factor is a variable that, when in short supply, can limit the rate of chemical reaction such as photosynthesis
Which factors affect the rate of photosynthesis?
- temperature
- light intensity
- concentration of carbon dioxide available
What is photosynthesis?
Photosynthesis is the chemical process by which green plants make carbohydrate.
Where does the light reaction stage of photosynthesis take place?
The light reaction stage of photosynthesis takes place in the granum of the chloroplast
Where does the carbon fixation stage of photosynthesis take place?
The carbon fixation stage takes place in the stroma of the chloroplast
What is the equation for photosynthesis?
light
Water+carbon dioxide —–glucose+oxygen
chlorophyll
