Bio 1 Chapter 1 Terms

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62608
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Bio 1 Chapter 1 Terms
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2011-01-28 11:56:34
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Bio Chapter Terms
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All the terms from Biology 1 Chpter 1
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  1. Define Asexual Reproduction
    Asexual Reporduction:The production of offspring that does not involve the union of gametes.
  2. Define Autotroph
    Autotroph: an organism that uses energy to synthesize organic molecule from inorganic substances
  3. Define Biology
    Biology: the science of life, the study of all living things
  4. Define Differentiation
    Differentiation: a process in which the cells of a multicellular individual become specialized during development
  5. Define DNA
    DNA: A double helix-shaped nucleic acid
  6. Define Ecology
    Ecology: The study of a relationship between organisms and their environment.
  7. Define Ecosystem
    Ecosystem: all the biotic and abiotic components of an environment.
  8. Define Evolution
    Evolution: All the changes that have formed life on Earth from it earliest beginnings to the diversity that characterizes it today.
  9. Define Evolve
    Evolve: Change over generation
  10. Define Gene
    Gene: a segment of DNA that contains coding for a polypeptide of protein; a unit of hereditary information
  11. Define Heterotroph
    Heterotroph: an organism that obtains organic food molecules by eating other organisms or their by products.
  12. Define Homeostasis
    Homeostasis: The stable internal condition of a living thing
  13. Define Multicellular Organism
    Multicellular Organism: a livving thing that consists of more than one cell.
  14. Define Natural Selection
    Natural Selection: the process by which organisms with favorable variations reproduce a higher rates that those without such variations.
  15. Define organism
    Organism: a form of life composed of mutually interdependent parts tat maintain variouse vital processes
  16. Define Photosynthesis
    Photosynthesis: the converion of light energy into chemical energy stored in organic compounts
  17. Define Reproduction
    Reproduction: the production of new off-spring
  18. Define Sexual Reproduciton
    Sexual Reproduction: the production of offspring from the combination of genetic material from two parent organisms
  19. Define Unicellular Organism
    Unicellular organism: living thing composed of one cell
  20. Define Cell division
    Cell division: is the formation of two cells from an existing cell
  21. Define Development
    Development: The process by which an organism grows
  22. Define Metabolism
    Metabolism: the sum of all chemical processing in living things
  23. 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.
  24. Define Controlled Experiment
    Controlled Experiment: a test of variables using a comparison of a control group with an experimental group.
  25. Define Data
    Data: include any and all information that scientists gather in tryig to answer their questions.
  26. Define Dependent Variable
    Dependent Variable: the responding cariable in an experiment
  27. Define Experiment
    Experiment: the process of testing a hypothesis of prediction by gathering date under controlled conditions.
  28. Define Hypothesis
    Hypothesis: A statement that can be tested experimentally
  29. Define Endependent variable
    Independent Variable: an experimentally manipulated variable
  30. Define Inference
    Inference: a conclusion made o the basis of facts or premises rather that on direct observations
  31. Define Model
    Model: essentially an explanation supported by data
  32. Define Observation
    Observation: typically employs one or more of the five senses to perceive objects or events.
  33. 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
  34. Define sampling
    Sampling: is the technique of using a sample, tat is a small part, to represent an entire population.
  35. 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
  36. Define Base Unit
    Base Unit: on of seven fundamental units of SI measurement that describe length, mass, time, and other quantities
  37. Define Compound Light microscope
    Compound Light microscope: an instrument that magnifies small objects so they can be seen easily using two or more lenses
  38. Define Experimental Group
    Experimental Group: a group of subjects that are exposed to the variable of a control experiment
  39. Define Derived unit
    Derived unit: are produced by the mathematical relationship between two base units or between two derived units
  40. 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.
  41. Define Magnification
    Magnification: the increase of an objects apparent size
  42. Define Microscope
    Microscope: an instrument that produces an enlarged image of an object
  43. Define Nosepiece
    Nosepiece: lenses can be rotated into place with the nosepiece
  44. Define Objective Lens
    Objective Lens: which is positioned directly above the specimen
  45. Define Ocular Lens
    Ocular Lens: in a microscope, the lens in the eyepiece
  46. Define Power of Magnification
    Power of Magnification: in a microscope, the factor of enlargement.
  47. Define Resolution
    Resolution: the power of microscope to show detail
  48. 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.
  49. Define SI
    SI: the official name of the measurement system
  50. Define Stage
    Stage: where the slide is placed under the objective lens
  51. 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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