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18 Cards in this Set
- Front
- Back
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What is Natural Science? |
A system of knowledge that attempts to explain how things happen in the natural world and why they happen in the way they do |
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Scientific Method |
Generally acquired and tested by use of a system of investigation. |
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What is Biology |
The study of the life. The science of life; attempts to explain how and why living things "work" |
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What are the levels at which life is organized are (from most to least inclusive) |
1) Biosphere 2) Ecosystem 3) Community 4)Population |
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An Organisms environment includes what components? |
Both living and nonliving components |
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How do Plants as well as certain prokaryotes and protistans make food? |
From carbon Dioxide, water, and energy of sunlight by the process of photosynthesis. |
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What are all animals ultimately dependent upon? |
autotrophs (Eg plants) for food. |
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WHy are Decomposers important for? |
Decomposers are important for recycling of complex dead organic matter into mineral nutrients that plants can use. |
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What unit of life is the cell? |
Basic unit of life. |
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What is the lowest level of structure capable of performing of all life's activities |
Cell |
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All organisms are composed of what? |
cells |
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a cell may exist as what two type of organisms? |
multicellular and unicellular |
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The diversity of life can be arranged into what 3 domains? |
1)Bacteria 2) Archaea 3) Eukarya |
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Domain Bacteria (Eubacteria) |
Unicellular prokaryotes (single and simple cell) Includes cyanobacteria and gram-positive eubacteria |
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Domain Archaea (Archaebacteria) |
Unicellular prokaryotes (single and simple cells) includes methanoges and extreme thermophiles many archaeans can s |
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WHat does evolution explain? |
Organisms are adapted to their environments. |
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Evolution explains what? |
The unity and diversity of life |
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What is the theory of evolution by natural selection? |
1) Genetic Variation 2) Overproduction 3) Limits on population growth 4) Differential reproduction |
