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Energy Cycles
7.1 and 36.1
| Term | Definition |
|---|---|
| energy | organism that makes its own food (Concept 7.1) |
| autotroph | An organism capable of synthesizing its own food from inorganic substances, using light or chemical energy. Green plants, algae, and certain bacteria are autotrophs. |
| primary consumers | consumer that feeds directly on producers |
| omnivores | consumer that eats both producers and consumers |
| detritus | wastes and remains of dead organisms |
| photosynthesis | process by which plants use the sun's energy to convert water and carbon dioxide into sugars |
| consumer | organism that obtains food by eating producers (autotrophs) or other consumers |
| secondary consumer | consumer that eats primary consumers |
| decomposer | organism that breaks down wastes and dead organisms |
| food webs | pattern of feeding in an ecosystem consisting of interconnected and branching food chains |
| producers | organism that makes its own food (autotroph) and produces organic molecules that serve as food for other organisms in its ecosystem |
| heterotroph | organism that obtains food by eating other organisms |
| carnivores | consumer that eats only other consumers |
| trophic level | feeding level in an ecosystem |
| food chain | pathway of food transfer from one trophic level to another |
| biomass | Biomass is biological material derived from living, or recently living organisms. |
| herbivores | consumer that eats only producers |
| tertiary consumers | consumer that eats secondary consumers |
| cellular respiration | chemical process that uses oxygen to convert chemical energy stored in organic molecules into ATP |
| energy pyramid | diagram representing energy loss from one trophic level to the next (Concept 36.2) |
| biomass pyramid | diagram representing the biomass in each trophic level of an ecosystem |
| pyramid of numbers | representation of the number of individual organisms in each trophic level of an ecosystem |
| kinetic energy | energy of motion |
| potential energy | energy stored due to an object's position or arrangement |
| thermal energy | total amount of energy associated with the random movement of atoms and molecules in a sample of matter |
| chemical energy | potential to perform work due to the arrangement of atoms within molecules |
| calorie | amount of energy required to raise the temperature of 1 g of water 1°C |
| biomass | organic material manufactured by producers |
| primary productivity | rate at which producers in an ecosystem build biomass |
Created by:
bripla1
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