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chapter 4
| Question | Answer |
|---|---|
| Autotroph | organism that makes its own food |
| Cellular Respiration | process in which cells break down glucose and make ATP for energy |
| Consumer | organism that consumes other organisms for food |
| Energy | ability to do work |
| Food | organic molecules such as glucose that organisms use for chemical energy |
| Glucose | simple carbohydrate with the chemical formula C6H12O6 that is the nearly universal food for life |
| Heterotroph | organism that gets food by consuming other organisms |
| Photosynthesis | process of using the energy in sunlight to make food (glucose) |
| Producer | organism that produces food for itself and other organisms |
| Calvin Cycle | second stage of photosynthesis in which carbon atoms from carbon dioxide are combined, using the energy in ATP and NADPH, to make glucose |
| Chemosynthesis | process of using the energy in chemical compounds to make food |
| Chlorophyll | green pigment in a chloroplast that absorbs sunlight in the light reactions of photosynthesis |
| Electron Transport Chain | series of electron-transport molecules that pass high-energy electrons from molecule to molecule and capture their energy Grana |
| Grana within the chloroplast, consists of sac-like membranes, known as thylakoid membranes | within the chloroplast, consists of sac-like membranes, known as thylakoid membranes |
| Light Reactions | first stage of photosynthesis in which light energy from the sun is captured and changed into chemical energy that is stored in ATP and NADPH |
| Photosystem | group of molecules, including chlorophyll, in the thylakoid membrane of a chloroplast that captures light energy |
| Stroma | space outside the thylakoid membranes of a chloroplast where the Calvin cycle of photosynthesis takes place |
| Thylakoid Membrane | membrane in a chloroplast where the light reactions of photosynthesis occur |
| Aerobic Respiration | type of cellular respiration that requires oxygen |
| Anaerobic Respiration | type of cellular respiration that does not require oxygen |
| Glycolysis | first stage of cellular respiration in which glucose is split, in the absence of oxygen, to form two molecules of pyruvate (pyruvic acid) and two (net) molecules of ATP |
| Krebs Cycle | second stage of aerobic respiration in which two pyruvate (pyruvic acid) molecules from the first stage react to form ATP, NADH, and FADH2 |
| Alcoholic Fermentation | type of anaerobic respiration that includes glycolysis followed by the conversion of pyruvic acid to ethanol and carbon dioxide and the formation of NAD+ |
| Fermentation | type of anaerobic respiration that includes glycolysis followed by the conversion of pyruvic acid to one or more other compounds and the formation of NAD+ |
| Lactic Acid Fermentation | type of anaerobic respiration that includes glycolysis followed by the conversion of pyruvic acid to lactic acid and the formation of NAD+ |