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20 Cards in this Set
- Front
- Back
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Define Biology
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Biology is the SCIENTIFIC study of life.
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Name 7 Properties of Life
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1. Order
2. Regulation 3. Growth and Development 4. Energy Utilization 5. Response to the Environment 6. Reproduction 7. Evolution |
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What is a biosphere?
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It consists of all the environments on earth that support life - including
1. soil 2. oceans, lakes, and other bodies of water 3. the lower atmosphere |
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What are the levels of biological organization?
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1. Biosphere
2. Ecosystems 3. Communities 4. Populations 5. Organisms 6. Organ Systems and Organs 7. Tissues 8. Cells 9. Organelles 10. Molecules and Atoms |
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Define Ecosystems
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An ecosystem consists of all organisms living in a particular area, as well as the nonliving, physical components of the environment that affect the organisms, such as water, air, soil, and sunlight.
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Define Communities
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All the living organisms in the ecosystem.
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Define Populations
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Within communities are various populations, groups of interacting individuals of one species (such as a group of iguanas)
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What is an organism?
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An organism is an individual living thing (such as one iguana)
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What is an organ system?
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An organ system contains two or more organs.
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Define Tissues
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A tissue consists of a group of similar cells performing a specific function. Each organ is made up of several different tissues.
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What is a cell?
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The cell is the smallest unit that can display all the characteristics of life.
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Define organelles
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Organelles are functional components of cells, such as the nucleus that houses the DNA.
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What is the chemical level in the biological organization?
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Molecules
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What is a molecule?
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Molecules are clusters of even smaller chemical units called atoms. Each cell consists of an enormous number of chemicals that function together to give the cell the properties we recognize as life.
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______ are photosynthetic organisms such as plants.
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Producers
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_____ are the organisms, such animals that, that feed on plants, either directly (by eating plants) or indirectly (by eating animals that eat plants).
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Consumers
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_____ such as fungi and many bacteria, _____ waste products and the remains of deceased organisms, changing complex dead material into simple nutrients that are recycled.
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Decomposers, decompose
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The dynamics of any ecosystem depend on two main processes. What are they?
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Cycling of nutrients and the flow of energy.
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Energy flows through an ecosystem, entering as ______ and exiting as ____.
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light, heat
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_____ is the lowest level of structure that can perform all activities of life.
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Cell
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