ENERGY TRANSFORMATION Flashcards
Is a complex process that uses light energy to convert CO2 and H2O into CARBOHYDRATES and O2.
PHOTOSYNTHESIS
is the process of oxidizing food molecules, like glucose, to carbon dioxide and water.
CELLULAR RESPIRATION
He first studied Photosynthesis.
In his experiment, he weighed a pot of soil and planted a willow tree in it. After 5 years, the tree gained 164 pounds and the soil weighed only 2 ounces.
He concluded that plants make their own organic materials and do not get these from the soil.
Jan Van Helmont (1580-1644)
In 1772, he showed that a spring of mint would “restore” air that had been “injured” by a burning candle. This result showed that oxygen gas, which is used up in burning, is released by plants.
Joseph Priestley (1733-1804)
In 1779, he supported the findings of Priestley, and added that this air (oxygen) could only be restored by plants if the sun was shining.
Jan Ingenhouz (1730-1799)
He weighed both the air and the plant before and after photosynthesis. His experiment showed that the increase in the dry weight of the plant was greater than the weight of the carbon dioxide removed from the air.
He concluded that aside from the CO2, the other substance that contributed to the increase in weight of the plant was water. Thus, mor than 190 years ago, the general outline of photosynthesis was understood as follows:
Nicholas de Saussure (1767-1845)
“other eating” those organism that cannot synthesize their own food and depend on autotrophs and other organisms for their subsistence.
HETEROTHROPS
“self-feeding” synthesize their own food.
AUTOTHROPS
types of autorthrops which include green plants and purple bacteria, and can utilize light energy to synthesize organic molecules.
PHOTOAUTOTHROPS
type of autothrops which include some bacteria that can synthesize organic substances from the inorganic substances in their environment and are not dependent on light energy.
CHEMOAUTOTHROPS
What “NADP” stands for ?
NICOTINAMIDE ADENOSINE DINUCLEOTIDE POSPHATE
This is the major site of photosynthesis in green plants
LEAVES
Light also has a particle-like quality, consisting of discrete particles called?
PHOTON
is the major photosynthetic pigment. It absorbs violet and red light and reflects green and yellow light.
CHLOROPHYLL A
The other photosynthetic pigments are called: that absorbs lightwave not absorb by cholorophylla is called ?
ACCESSORY PIGMENTS
