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19 Cards in this Set
- Front
- Back
Biology
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The study of Life
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Biosphere
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All life and the place where life exists
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Ecosystems
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All living organisms in a particular area and all the non-living components of the environment with which life interacts (such as soil, water, and light).
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Communities
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All organisms in the tide pool (iguanas, crabs, seaweed, bacteria, and others) are collectively called a community.
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Populations
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Groups of interacting individuals of one species (such as a group of iguanas).
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Organisms
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An individual living thing (such as one iguana).
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Organ systems and Organs
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What an organisms body consists of (such as circulatory, respiratory, endocrine, etc.).
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Tissues
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Each organ is made up of several different tissues. A tissue consists of a group of similar cells performing a specific function.
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Cells
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The smallest unit that can display all the characteristics of life.
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Organelles
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The functional components of cells (such as the nucleus that contains DNA).
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Molecules and Atoms
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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 of we recognize as life.
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Prokaryotic Cell
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Smaller and simpler than the eukaryotic cell. Most commonly the cells of Bacteria.
These cells do not have a nucleus to house their DNA. |
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Eukaryotic Cell
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Plants and Animals have eukaryotic cells. The cell is subdivided by internal membranes into different functional compartments called organelles.
These cells do have a nucleus to house their DNA. |
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Three Domains of Life
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Domain Bacteria\ Two different organisms that have
Domain Archaea/ prokaryotic cells Domain Eukarya All eukaryotes are in this domain; includes the three kingdoms Plantae, Fungi, and Animalia. |
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Plants
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Produce their own sugars and other foods by photosynthesis.
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Fungi
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Mostly decomposers, obtain food by digesting dead organisms and organic wastes.
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Animals
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Obtain food by ingesting and digesting other organisms.
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Protists
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Eukaryotes that don't fit into the other three domains. Most are single-celled, and include microscopic protozoans, such as amoebas. Can also include certain multicellular forms such as seaweeds.
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Evolution
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First discovered by Darwin and originally called "Descent with Modification".
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