photosynthesis Flashcards
(24 cards)
what makes their food using photosynthesis?
plants and algae
what is the food produced?
sugar called glucose
what will increase due to photosynthesis?
plant biomass
what happens during photosynthesis?
plants produce glucose + oxygen from carbon dioxide+ water using light energy from the sun
photosynthesis equation?
carbon dioxide+water—-> glucose+oxygen
whys it an endothermic reaction?
it requires light energy to react carbon dioxide and water to produce glucose and oxygen
the light energy is absorbed by a green pigment called…
chloropyll in the leaves.
wheres chloropyll located?
in chloroplasts in plant cells
main organ for photosynthesis?
plant leaves
stomota?
tiny holes in skin of the leaf. control gas exchange by opening and closing and are involved in loss of water from leaves.
what is a singular stomota called?
stoma
xylem?
narrow,hollow dead tubes with lignin, transport of water and minerals in plants
what is some of the glucose produced by photosynthesis used for?
respiration
respiration?
chemical change that takes place inside living cells, which uses glucose and oxygen to release the energy that organisms need to live.
what can the glucose not used for respirtion be used for?
starch, lipids(fats/oils),cellulose and nitrates absorbed from the soil (amino acids, proteins)
starch is soluble or insoluble?
insoluble
starch is a storage form of…
carbohydrate
cellulose is used to…
build cell walls and adds strength to them
lipids (fats/oils) is used for…
storage in seeds
how to measure photosynthesis…
number of bubbles or volume of oxygen gas set off at a time, rate of carbon dioxide uptake, rateof glucose production.
the rate of photosynthesis is proportional to what?
the light intensity until another factor becomes limiting
the chemical reactions in photosynthesis are controlled by…
enzymes. enzymes controlled reactions are affected by temp
enzymes?
a protein which catalyses or sppeds up a chemical reaction.
Gg
Gg
