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| A slime mold which consists of a mass of cytoplasm that may spread thinly over an area with many diploid nuclei, but not contained in cells |
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| Single-celled organisms that have distinctive, small cavities beneath the surface of their cells. This group contains dinoflagellates, apicomplexans, and ciliates. |
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| Protist organisms common in freshwater lakes in ponds, of which many are predators that stalk and engluf prety, and some are parasitic. These organisms move by means of pseudopods. |
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| organisms whose metabolisms do not require oxygen allowing the ability ot inhabit oxygen-free environments. |
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| A parasitic chromist which forms infectious spores. An example is Plasmodium, a malarial parasite. |
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| Viruses that infect bacteria |
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| Slime mold composed of independent haploid cells. |
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| A group that's memebers have fine, hairlike projections on their flagella and desplay a wide range of different forms. |
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| Specialized organelles which beat in unison to propel the signle-celled organism. |
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| The most complex alveolate unicellular organism which utilize speciallized organelles such as cilia for propulsion. |
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| The process by which prokaryotes transfer DNA from a donor to a recipient without reproduction. |
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| Photosynthetic chromists which produce protective shells. |
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| Unicellular alveolates which swim by means of two whiplike flagella. |
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| Protective structures for rod-shaped bacteria which are resistant to extreme environmental conditions. |
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| Single-celled protists that live mostly in fresh water and lack a rigid outer covering. |
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| Organelle of Bacteria that allows bacteria to move and disperse. |
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| A marine protist that prouces shells constructed of calcium carbonate. |
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| A staining technique which can distinguish between two types of cell wall construction in bacteria. |
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| A form of freshwater protists which have stiff, needlelike pseudopods. |
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| The cell that a virus or other infectious agent infects. |
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| nitrogen-fixing bacterium |
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| Bacteria which capture nitrogen gass from air and combine it with hydrogen to produce ammonium, which plants can use directly. |
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| Single celled photosynthesizers that float passively in lakes and oceans and account for nearly 70% of all photosynthetic activity on Earth. |
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| A small circular DNA molecule that is seperate from the single bacterial chromosome. |
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| An alternative term for acellular slime mold |
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| A cell-less structure which oozes around its food such as in a plasmodial slime mold. |
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| Infectious protein particles without genetic material. |
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| Eukaryotes which are not of the kingdoms Fungi, Plantae, or Animalia. |
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| Single-celled nonphotosynthetic protists |
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| A sluglike mass which consists of individual cells amd behaves like a multicellular organism. |
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| Extensions which surround and engulf food and provide movement for basic organisms. |
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| Marine protists which produce shells of silica. |
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| Infectious particles that lack a protein coat, consisting of nothing more than short, circular strands of RNA. |
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| A small group of protists shaped as long filaments which form cottony tufts. |
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| Organisms which possess at least one flagellum. |
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