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Biology Chapter 6.
| Question | Answer |
|---|---|
| Energy | is the ability to do work! |
| Photosynthesis | plants convert the energy of sunlight into the energy in the chemical bonds of carbohydrates sugars and starches |
| Autotrophs | organisms that are able to use a source of energy, such as sunlight, to produce food directly from simple inorganic molecules in the environment. |
| Heterotrophs | organisms that obtain energy from the foods they eat. |
| Plant pigments | absorb or reflect light |
| Green pigment in plants | Chlorophyll absorbs red and blue light and reflects green. |
| NADP | accepts a pair of high energy electrons and it is converted to NADPH |
| ATP | energy is stored in the phosphate bonds |
| 1 phosphate group | AMP: Adenosine monophosphate |
| 2 phosphate groups | ADP: Adenosine diphosphate |
| Light Reactions | sunlight is captured to produce NADPH and ATP; requires light; occurs inside the photosynthetic membranes (contain chlorophyll) of the chloroplast. |
| Dark Reactions | energy from NADP and ATP is used to produce Glucose (this can store more energy- more stable molecule) ; does not require light; occurs outside the photosynthetic membranes of the chloroplast. |
| Light Absorption | The photosynthetic membrane contains clusters of pigment molecules called “photosystems” |
| Oxygen Production | Photosynthetic membrane provides new electrons to chlorophyll to replace the ones used to make NADPH. |
| ATP Formation | the Hydrogen ions from the split water are used to attach another phosphate group to ADP to form ATP |
| The Calvin Cycle | circular series of reactions discovered by Melvin Calvin |
| The Calvin Cycle(cont.) | Uses Carbon dioxide along with NADPH and ATP to form a 5-carbon sugar. |
| The Calvin Cycle (cont.) | 1st reaction: 5-carbon sugar combines with CO₂ to form two 3-carbon compounds. Next 2 reactions: using ATP and NADPH the 3C compounds are converted toPGAL (phosphoglyceraldehyde)…….Glucose etc. |
| Glycolysis | the breaking down of Glucose |
| ATP | molecules are produced from 4 molecules of ADP. |
| Net Gain | 2 molecules of ATP during Glycolysis |
| Aerobic Process | requires oxygen |
| Respiration | uses oxygen to break down food molecules to release energy |
| Kerbs cycle | Pyruvic acid travels from the cytoplasm to the mitochondrion |
| Kerbs Cycle (cont.) | 2 Carbons added (from breakdown of pyruvic acid) 2 Carbons removed (2 molecules of CO₂) 3NAD+ converted to NADH 1 FAD converted to FADH₂ 1 GFP converted to GTP n to be broken down. citric is the 1st compound formed in this series of reactions |
| Waste product of Krebs Cycle | CO2 |
| Oxygen | is the final electron acceptor in the process of respiration. |
| Photosynthesis and Respiration | can be thought of as opposite process. |
| Glycolysis produces | 2 ATP molecules per molecule of glucose and does not require oxygen…but NADH must be converted to NAD+ |
| Fermentation is Anaerobic | which means it does not require oxygen |
| Alcoholic Fermentation | microorganisms use this process to breakdown pyruvic acid into a 2-Carbon Alcohol and Carbon Dioxide to produce NAD+ |