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| the high degree of order within an organism's internal and external parts and its interactions with the living world |
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| in biology , the smallest unit that can perform all life processes; Cells are covered by a membrane and contain DNA and cytoplasm |
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| describes an organism that consists of a single cell |
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| describes a tissue, organ, or organism that is made of many cells |
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| a collection of cells that carry out a specialized function in the body |
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| a collection of specialized cells and cell products that perform a specific function |
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| one of the small bodies found in the cytoplasm of a cell and that are specialized to perform a specific function |
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| chemical compound that provides physical structure and brings about movement, energy use, and other cellular functions |
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| the steady-state physiological condition of the body |
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| the sum of all chemical processes that occur in an organism |
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| the formation of two cells from one existing cell |
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| the gene-directed process of which an organism matures |
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| the process of producing offspring |
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| a short segment of DNA that contains the instructions for a single trait |
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| in a modern taxonomic system , the broadest category ; the category that contains kingdoms |
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| in a traditional taxonomic system, the highest taxonomic category, which contains a group of similar phyla |
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| the study of the interactions between organisms and the other living and nonliving components of their environment |
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| a community of organisms and their abiotic environment |
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| a heritable change in the characteristics within a population from one generation to the next; the development of new types of organisms from preexisting types of organisms over time |
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| the process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do; a theory to explain the mechanism of evolution |
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| the process of becoming adapted to an environment; an anatomical, physiological, or behavioral trait that improves an organism's ability to survive and reproduce |
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| the series of steps followed to solve problems, including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions |
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| the process of obtaining information by using the senses; the information obtained by using the senses |
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| in science, an idea or explanation that is based on observations and that can be tested |
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| a statement made in advance that expresses the results that will be obtained from testing a hypothesis if the hypothesis supported; the expected outcome if a hypothesis is accurate |
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| a procedure that is carried out under controlled conditions to discover, demonstrate, or test a fact, theory, or general truth |
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| in an experiment, a group that serves as a standard of comparison with another group to which the control group is identical except for one factor |
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| in an experiment, a group that is identical to a control group except for one factor and is compared with the control group |
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| in an experiment, the factor that is deliberately manipulated, also called the manipulated variable |
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| in an experiment, the factor that changes as a result of manipulation of one or more other factors; also called a responding variable |
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| an explanation for some phenomenon that is based on observation, experimentation, and reasoning; that is supported by a large quantity of evidence; and that does not conflict with any existing experimental results or observations |
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| the process in which experts in a given field examine the results and conclusions of a scientist's study before that study is accepted for publication |
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| compound light microscope |
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| a microscope that uses light to illuminate a specimen that is then magnified by two lenses |
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| the part of a compound light microscope that magnifies an image, usually 10 times |
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| the part of a compound light microscope that is located directly above the specimen and that magnifies the image of the specimen |
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| a platform of a compound light microscope that supports the slide holding the specimen |
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| a light bulb that provides light for viewing the image. it can be either light reflected with a mirror or an incandescent light from a small lamp |
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| the increase of an objects apparent size by using lenses or mirrors |
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| the part of a compound light microscope that holds the objective lenses in place above the specimen |
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| in microscopes, the ability to form images with fine detail |
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| scanning electron microscope |
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| a microscope that produces an enlarged, three-dimensional image of an object by using a beam of electrons rather than light |
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| transmission electron microscope |
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| a microscope that transmits a beam of electrons through a very thin slice of specimen and that can magnify up to 200,000 times |
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| a decimal-based standard system of measurement that is used by scientists; similar to the Systeme Internationale |
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| one of the fundamental units of measurement that describes length, mass, time, and other quantities and from which other units are derived |
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