chapter 8 - photosynthesis Flashcards
where does photosynthesis occur?
in the chloroplasts in the leaves of a plant
what is the name of the green pigment in the leaves?
chlorophyll
what type of reaction is photosynthesis?
endothermic - it absorbs energy
what type of energy is used in photosynthesis?
light energy
word equation for photosynthesis?
carbon dioxide + water -> glucose + oxygen
balanced symbol equation for photosynthesis?
6CO(2) + 6H(2)O -> C(6)H(12)O(6) + 6O(2)
define limiting factor
anything that limits the rate of reaction when it is in short supply
limiting factors of photosynthesis?
- temperature
- carbon dioxide concentration
- light intensity
why are limiting factors important in the economics of growing plants in a green house?
greenhouses need to produce the maximum rate of photosynthesis while making profit
how do plants use the glucose produced in photosynthesis?
- respire
- to convert into insoluble starch for storage
- produce fat or oil for storage
- produce cellulose to strengthen cell wall
- produce amino acids for protein synthesis
how does light intensity affect the rate of photosynthesis?
increasing light intensity increases the rate of photosynthesis until another factor becomes limiting
how does carbon dioxide concentration affect the rate of photosynthesis?
increasing carbon dioxide concentration increases the rate of photosynthesis until another factor becomes limiting
how does temperature affect the rate of photosynthesis?
increasing temperature increases the rate of photosynthesis but at high temperatures enzymes are denatured so the rate of photosynthesis quickly decreases
equation for the inverse square law for light intensity?
light intensity ∝ 1/distance(^2)
