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Define Asexual Reproduction
Asexual Reporduction:The production of offspring that does not involve the union of gametes.
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Define Autotroph
Autotroph: an organism that uses energy to synthesize organic molecule from inorganic substances
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Define Biology
Biology: the science of life, the study of all living things
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Define Differentiation
Differentiation: a process in which the cells of a multicellular individual become specialized during development
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Define DNA
DNA: A double helix-shaped nucleic acid
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Define Ecology
Ecology: The study of a relationship between organisms and their environment.
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Define Ecosystem
Ecosystem: all the biotic and abiotic components of an environment.
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Define Evolution
Evolution: All the changes that have formed life on Earth from it earliest beginnings to the diversity that characterizes it today.
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Define Evolve
Evolve: Change over generation
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Define Gene
Gene: a segment of DNA that contains coding for a polypeptide of protein; a unit of hereditary information
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Define Heterotroph
Heterotroph: an organism that obtains organic food molecules by eating other organisms or their by products.
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Define Homeostasis
Homeostasis: The stable internal condition of a living thing
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Define Multicellular Organism
Multicellular Organism: a livving thing that consists of more than one cell.
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Define Natural Selection
Natural Selection: the process by which organisms with favorable variations reproduce a higher rates that those without such variations.
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Define organism
Organism: a form of life composed of mutually interdependent parts tat maintain variouse vital processes
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Define Photosynthesis
Photosynthesis: the converion of light energy into chemical energy stored in organic compounts
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Define Reproduction
Reproduction: the production of new off-spring
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Define Sexual Reproduciton
Sexual Reproduction: the production of offspring from the combination of genetic material from two parent organisms
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Define Unicellular Organism
Unicellular organism: living thing composed of one cell
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Define Cell division
Cell division: is the formation of two cells from an existing cell
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Define Development
Development: The process by which an organism grows
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Define Metabolism
Metabolism: the sum of all chemical processing in living things
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Define Control Group
Control group: In an experiment, a group or individual that serves as a standard of comparison with another group or individual to which it is identical except for one factor.
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Define Controlled Experiment
Controlled Experiment: a test of variables using a comparison of a control group with an experimental group.
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Define Data
Data: include any and all information that scientists gather in tryig to answer their questions.
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Define Dependent Variable
Dependent Variable: the responding cariable in an experiment
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Define Experiment
Experiment: the process of testing a hypothesis of prediction by gathering date under controlled conditions.
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Define Hypothesis
Hypothesis: A statement that can be tested experimentally
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Define Endependent variable
Independent Variable: an experimentally manipulated variable
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Define Inference
Inference: a conclusion made o the basis of facts or premises rather that on direct observations
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Define Model
Model: essentially an explanation supported by data
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Define Observation
Observation: typically employs one or more of the five senses to perceive objects or events.
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Define Prediction
Prediction: a statement made in advance that state the results that will be obtained from testing a hypothesis, if the hypothesis is supported
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Define sampling
Sampling: is the technique of using a sample, tat is a small part, to represent an entire population.
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Define Theory
Theory: a Broad and comprehensive statement of what is believed to be true, supported by considerable experimental evidence resulting from many tests of related hypotheses
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Define Base Unit
Base Unit: on of seven fundamental units of SI measurement that describe length, mass, time, and other quantities
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Define Compound Light microscope
Compound Light microscope: an instrument that magnifies small objects so they can be seen easily using two or more lenses
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Define Experimental Group
Experimental Group: a group of subjects that are exposed to the variable of a control experiment
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Define Derived unit
Derived unit: are produced by the mathematical relationship between two base units or between two derived units
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Define Electron microscope
Electron microscope: an instrument that uses a beam of electrons rather that a beam of light to enlarge the image of an extremely small object so that it can be seen.
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Define Magnification
Magnification: the increase of an objects apparent size
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Define Microscope
Microscope: an instrument that produces an enlarged image of an object
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Define Nosepiece
Nosepiece: lenses can be rotated into place with the nosepiece
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Define Objective Lens
Objective Lens: which is positioned directly above the specimen
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Define Ocular Lens
Ocular Lens: in a microscope, the lens in the eyepiece
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Define Power of Magnification
Power of Magnification: in a microscope, the factor of enlargement.
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Define Resolution
Resolution: the power of microscope to show detail
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Define Scanning electron microscope (SEM)
Scanning electron microscope (SEM): a microscope that produces an enlarged image of the surface of an object with a beam of electrons rather than light.
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Define SI
SI: the official name of the measurement system
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Define Stage
Stage: where the slide is placed under the objective lens
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Define Transmission Electron Microscope
Transmission electron microscope: a microscope that transmits a beam of elcetrons rather that light through a thinly sliced specimen
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