photosynthesis Flashcards
1
Q
limiting factors of photosynthesis
A
carbon dioxide concentration, light intensity and temperature
2
Q
word equation for photosynthesis
A
CO2 + water —> sugar + oxygen
3
Q
photosynthesis
A
series of enzyme controlled reactions which takes place in chloroplasts
4
Q
light intensity - stage 1
A
- light energy from sun is trapped by chlorophyl into chloroplast
- converted into chemical energy
- some light energy splits water into hydrogen and oxygen
- oxygen diffuses into atmosphere
- light energy generates ATP
5
Q
carbon fixation - stage 2
A
- consists of enzyme controlled reactions in cycle in chloroplasts
- CO2 absorbed by leaf from atmosphere
- CO2 reduced to form sugar
- ATP from light reactions provide energy for conversion
6
Q
what is the glucose used for in carbon fixation
A
- to convert into starch as an energy store
- used for cell respiration
- converted into cellulose in cell walls
7
Q
how to determine rate of photosynthesis
A
- rate in which green plants produce oxygen
- number of oxygen bubbles produced over set period of time
