photosynthesis Flashcards
what is photosynthesis
light absorbed from the sun and converted into chemical energy in the form of glucose
it is an endothermic process
what is the word equation for photosynthesis
carbon dioxide + water = glucose + oxygen
what is the symbol equation for photosynthesis
6CO2 + 6H20 = C6H12O6 + 6O2
what happens to the glucose made
it is used to make energy by respiration
it can be stored as starch
how to test for starch
- place leaf in boiling water to kill the leaf
2.place the leaf in boiling ethanol to remove the chlorophyll
3.the leaf is dipped into water to soften it.
4.iodine is added
5.if present starch goes from yellow/brown - blue/black
limiting factors
carbon dioxide,light,temperature
normal CO2
red
higher CO2
yellow
lower CO2
purple
what part of the plant does photosynthesis take place
leaves
why is photosynthesis described as endothermic
energy is absorbed from the sun
what is the chemical that traps light energy
chlorophyll
three ways a leaf is adapted to absorb light
large surface area
thin
packed with chloroplasts
two ways the leaf is adapted for gas exchange
air spaces
small opening