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Stack #34911

Where does the energy come from? Almost all of the energy comes from the sun.
Autotroph An organism that produces its own nutrients from inorganic substances or from the environment (ex. sunlight) instead of consuming other organisms.
Photosynthesis The process by which plants, algae, and some other bacteria use sunlight, carbon dioxide, and water to produce carbohydrates and oxygen.
Heterotroph an organism that obtains organic food molecules by eating other organisms or their byproducts and that cannot synthesize organic compounds from inorganic materials
Biochemical Pathway a series of chemical reactions that convert one biological material into another (the product of one reaction is consumed in the next reaction)
Cellular respiration Oxygen and some of the organic compounds produced by photosynthesis are used by cells in a process calles cellular respiration.
Photosynthesis can be devided into how many stages? Name them. 2 stages: Light reactions & Calvin Cycle
Light Reactions Light energy (absorbed from the sun) is converted to chemical energy, which is temporarily stored in ATP and the energy carrier molecule NADPH
Calvin Cycle Organic compounds are formed using CO2 and the chemiacl energy stored in ATP and NADPH
Give the equation that summarizes the process of photosynthesis. 6CO2+6H2O(light energy)=C6H12O6+6O2
The light reactions begin with the absorbtion of light in chloroplasts
Chloroplast has .... membranes? 2
thylakoids a membrane system found within chloroplasts that contains the components for photosynthesis
grana stacks of thylakoids in a chloroplast
visible spectrum the portion of the electromagnetic spectrum that includes all of the wavelengths that are visible to the human eye
pigment compound that absorbs light
chlorophyll a green pigment that is present in most plant cells, that gives plants their characteristic green color, and that reacts with sunlight, carbon dioxide, and water to form carbohydrates
The 2 most common types of chlorophyll are chlorophyll a and chlorophyll b
Chlorophyl a absorbs less .... light and more .... light than chlorophyl b. less blue light and more red light
whch of the chlorophylls are directly involved in light reactions of photosynthesis? Chlorophyll a
Carotenoid a class of pigments that are present mostly in plants and that aid in photosynthesis
stroma in plants, the solution that surrounds the thylakoids in a chloroplast
Created by: anamak