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Ecology and Cycles
Review for ecology and cycles quiz
| Question | Answer |
|---|---|
| Autotrophs (producers) | plants, they use carbon dioxide and sunlight to produce energy through photosynthesis |
| Competition | 2 organisms try to obtain the same resource in the same area |
| DNA | Deoxyribonucleic acid, double stranded, stays in nucleus, Adenine binds with thiamin and guanine binds with Cytosine A to T and G to C, determines the order of the amino acid sequence of a protein. |
| deforestation | cutting down forest, results in carbon dioxide being released into the atmosphere resulting in global warming or global climate change |
| acid rain | rain with a low pH formed when sulfur from factories is released into the atmosphere. Destroys plants and animals living in lakes, results from power plants releasing acidic chemicals into the air. |
| DNA codes for proteins | by arranging certain nitrogen bases in a particular order |
| global warming | caused by increasing carbon dioxide levels in the atmosphere usually from burring fossil fuels |
| nucleic acids | subunits of DNA that code for proteins |
| Photosynthesis | plants combining water and carbon dioxide in the chloroplast with sunlight to make glucose and oxygen. |
| cellular respiration | animals and plants combine oxygen and glucose in the mitochondria to form ATP, carbon dioxide and water |
| biomass | the total amount of plants and animals at each level of the food chain. makes a pyramid shape. Most at bottom in plants, least at top in tertiary consumers |
| nitrogen fixation | bacteria take compound and turn them into a form of nitrogen which is usable by plants and animal |
| mitochondria | cell organelle responsible for cellular respiration (making ATP) |
| decomposer | food web organisms that break down dead and decaying material and return their nutrients back to the soil. |
| energy pyramid | a pyramid shaped diagram that show how energy level decrease as organism move through a food web. Only 10 percent of the energy is transferred to each level. |
| heterotrophs (consumers) | organism in a ecosystem that must eat to obtain energy. everything but plants |
| carnivore | eat only meat |
| omnivore | eat plants and animals |
| herbivore | eats only plants |
| Mutualism | both organisms living together benefic. ex lichens |
| migration | animals moving a long ways away from an area for a season to find food or reproduce |
| carrying capacity | maximum number of animals that an area can support. Make a s shaped graph |
| exponetial growth | when a population grows very rapidly exceeding it carrying capacity and will eventually run out of resources and have massive deaths. |
| food web | graphic representation of how energy is moved through an ecosystem from producers to consumers converting radiant energy into chemical energy. |
| bioaccumulation | when small amounts of toxins are eaten by animals lower on the food chain and their affects are magnified as they move up the food chain. Example mercury in fish. |
| Carbon cycle | How carbon is naturally cycled through the atmospher. burning fossil fuels and deforestation increases carbon dioxide in the atmosphere leading to global warming. Plants remove carbon by photosynthesis. |
Created by:
TeresaGentry
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