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23 Cards in this Set
- Front
- Back
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1. What is the smallest unit of life?
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the cell
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2. What is the difference between a multicellular organism and a unicellular organism?
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Multicellular are made of many cells whereas, unicellular are made of only one cell.
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3. What is homeostasis?
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Homeostasis is keeping an organism's internal conditions stable when external conditions change.
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4. What are the six characteristics of living things?
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Growth and development, uses energy, has homeostasis, reproduces, responds to stimuli and is organized.
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5. Name six abiotic factors.
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Sun, climate, temperature, water, atmosphere and soil.
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6. What is the difference between biotic factors and abiotic factors?
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Biotic factors refer to living organisms in an ecosystem. Abiotic factors are the nonliving parts of an ecosystem.
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7. What is an ecosystem?
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An ecosystem is the living and nonliving things in a particular area and the interactions that occur.
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8. What role do bacteria have in an ecosystem?
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Bacteria recycle and return nutrients to the soil.
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9. Name the four main earth cycles that redistribute energy and matter on the planet.
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The water cycle, the carbon cycle, the nitrogen cycle and the oxygen cycle.
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10. What is the driving force of the water cycle?
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Sunlight is the driving force of the water cycle.
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11. What are the three stages of the water cycle?
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Evaporation, condensation, and precipitation
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12. What do living things use nitrogen for?
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Nitrogen is an important part of proteins and DNA.
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13. What is nitrogen fixation?
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It's the process by which nitrogen in the atmosphere changes to nitrogen that is usable by living things.
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14. Where does most of the oxygen in the atmosphere come from?
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Most oxygen comes from plants and algae.
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15. What is an important part of the carbon cycle?
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Decomposition
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16. What is an ecosystem?
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An ecosystem is all the living things and nonliving things in a given area.
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17. How does energy move through an ecosystem?
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Energy moves from producers to consumers.
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18. What is the main process through which producers make their own food?
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Photosynthesis.
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19. What is the basic process of photosynthesis?
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Carbon dioxide + water in the presence of sunlight = oxygen + glucose.
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20. Name four types of consumers.
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Herbivore, carnivore, omnivore, and detrivore.
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21. What is a food chain?
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A food chain is a model that shows how energy flows in an ecosystem through feeding relationships.
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22. What is a food web?
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A food web is a model to show how food chains in a community are interconnected.
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23. What is an energy pyramid?
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It is a model to show the amount of energy available in each step of a food chain.
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