click below
click below
Normal Size Small Size show me how
Stack #34911
Question | Answer |
---|---|
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 |