Term
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Definition
| Adenosine triphosphare is used by cells as an immediate energy source |
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Term
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Definition
| Organism that is able to synthasise organic compounds from simple molecules, such as carbon dioxide |
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Term
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Definition
| Dry mass of living organisms per unit area |
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Term
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Definition
| Metabolic pathway in photosynthesis comprising the light-independent reactions |
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Term
| Chemosynthetic autotrophs |
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Definition
| Autotrophs which use energy from chemical reactions to make organic compounds |
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Term
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Definition
| Green pigment found in chloroplasts which releases electrons when it absorbs light |
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Term
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Definition
| Organelles found in plant cells; the sites of photosynthesis |
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Term
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Definition
| Animals in the food chains and webs that eat other organisms; hetrotrophs |
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Term
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Definition
| Organisms that feed on dead or decaying matter, secreting digestive enzymes externally |
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Term
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Definition
| Organisms that feed on dead and decaying matter, or detritus |
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Term
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Definition
| System of carries attached to membranes that transport electrons |
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Term
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Definition
| Chemical reaction involving an overall intake of energy |
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Term
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Definition
| Chemical reaction involving an overall release of energy |
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Term
| Gross Primary Productivity (GPP) |
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Definition
| Rate at which light energy is incorperated into organic compounds by an ecosystem |
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Term
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Definition
| Chemical reaction used to demonstrate the LDR |
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Term
| Light Dependent Reactions (LDR) |
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Definition
| Stage of photosynthesis that requires light to produce ATP and reduced NADP; occurs on the thylakoid membranes |
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Term
| Light-Independent Reactions (LIR) |
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Definition
| Stage of photosynthesis that does not require light; reduces carbon dioxide to glucose; occurs in the stroma |
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Term
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Definition
| Factors that at any time limit the rate of reaction |
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Term
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Definition
| Series of linked enzyme-controlled chemical reactions e.g. the Calvin cycle |
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Term
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Definition
| Nicotinamine dinucleotide phosphate; a hydrogen carrier co-enzyme |
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Term
| Net Primary Productivity (NPP) |
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Definition
| Rate at which energy is transfered to organic molecules making up a plants biomass |
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Term
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Definition
| Removal of electrons from a compound |
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Term
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Definition
| Layer of cells found just below the upper surface of the leaves where most photosynthesis occurs |
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Term
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Definition
| Autotrophs which use light energy to make organic molecules |
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Term
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Definition
| Splitting of water using light energy |
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Term
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Definition
| Group of photosensitive pigments that release electrons when absorbign light energy |
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Term
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Definition
| Microscopic photosynthesising organisms found in the sea |
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Term
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Definition
| Rate at which energy is incorporated into organic compounds in an ecosystem |
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Term
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Definition
| Autotrophic organisms at the start of food chains |
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Term
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Definition
| Bar graph representing the total amount of biomass at each trophic level |
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Term
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Definition
| Bar graph representing the total amount of energy at each trophic level |
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Term
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Definition
| Bar graph representing the total number of orgnisms at each trophic level |
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Term
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Definition
| Addition of electrons to a compound |
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Term
| Ribulose biphosphate (RuBP) |
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Definition
| A 5C compound that accempts CO2 in the LIR |
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Term
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Definition
| Layer of cells found in the lower half of leaves allowing air spaces for gas exchange |
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Term
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Definition
| Fluid-filled space inside chloroplasts; the site of the LIR |
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Term
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Definition
| Membrane found inside chloroplasts; site of LDR |
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Term
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Definition
| Feeding levels within an ecosystem |
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Term
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Definition
| Representation of the movement of electrons in the LDR |
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