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15 Cards in this Set

  • Front
  • Back
air is a combination of many gases including CO2
Carbon dioxide
-green plants cannot live without water and air
-experiments show that H from water is later found as part of the C6H12O6 molecule
water
-when ________ is split the O2 diffues away, but the electrons flow through a transfer chain to help form ATP
-experiments in 1941 showed that the oxygen released from plants comes from __________
water
-In 1643, Can Helmont proved empirically that water, not soil, is needed by plants
-experiments show that light energy is used to split _________ into H and O
water
-glucose produced by leaves can be used to build starch, cellulose, or other organic compounds
-experiments in the 1950s using radioactive showed that O2 from the CO2 combines with other molecules to form C6H12O6
carbohydrates
-Glucose can come to a cell already made or can be made in some cells
-leaves from plants grown in the dark have a lower amount of starch than leaves from plants grown in light
carbohydrates
If H iscombined with CO2 glucose can be made
-Glucose can be stored aas a starch molecule in the leaves plants
carbohydrates
-Making glucose does not require light but it does require ATP
-During the night plants use ATP to assemble glucose
carbohydrates
-animal cells cannot make glucose
-all cells need glucose to carry on cellular activity
carabohydrates
-In 1771 Priestly proved that plants give off oxygen (gas)
-In 1779 Igenhoussz found that aquatic plants produce O2 in the light but not in the dark. He concluded that plants need sunlight to produce
oxygen
Radiant energy from the sun can be described in terms of its energy content
sunlight
-pigments found in some cells are capable of absorbing various parts of the sun's energy
-in 1992 Marcus won a Nobel prize for Physics describing the process of electron flow in plants
sunlight
-chlorophyll absorbs light energy and uses it in chemical reations in the chloroplasts
-growth and dicision of plant cells requires chemical energy and organic molecules
chloroplasts
-___________ are the cellular organelles found in leaves
-the pigment (chlorophyll) is foundin __________
chloroplasts
-energy is needed for chemical reactions to occur
-animal cells do not have ____________
chloroplasts