Life Science.1

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josandrajcalves
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148991
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Life Science.1
Updated:
2012-04-23 12:38:05
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Grantham
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Grantham Life Science Week 1
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  1. Characteristics of Life
    • Order
    • Metabolism
    • Motility
    • Responsiveness
    • Reproduction
    • Development
    • Heredity
    • Evolution
    • Adaptations
  2. Order
    Each structure or activity lies in a specific relationsip to all other structures and activities
  3. Metabolism
    Organized chemical steps break down and build up molecules, making energy available or building needed parts/(gr. metabole, to change) the series of chemical reactions by wich cells aquire and use energy and that contributes to repair, growth, and other survival process
  4. Motility
    Using their own power, organisms move themselves or their body parts / the self propelled movement of an individual or its parts
  5. Responsiveness
    Organisms perceive the environment and react to it / the dendancy of a living thing to sense and react to its surroundings
  6. Reproduction
    Organisms give rise to others of the same type / the method by wich individuals give rise to other individuals of the same type
  7. Development
    Ordered sequence of progressive changes result in an individual acquiring increased complexity / the process by which an offspring increases in size and complixity from a zygote to an adult
  8. Heredity
    Organisms have units of inheritance called genes that are passed from parent to offspring and control physical, chemical and behavioral traits / the transmission of genetic characters from parents to offspring
  9. Evolution
    Populations of organisms change over time, acquiring new ways to survive, to obtain and use energy and to reproduce / changes in gene frequencies in a population over time
  10. Adaptation
    Specific structures, behaviors and abilities suit life-forms to their environment
  11. Organism
    An individual, independent living entity
  12. Organ System
    A group of body parts that carries out a particular function in an organism
  13. Organ
    A structure consisting of two or more tissues that performs specialized functions within an organism
  14. Tissue
    A group of similar cells that carries out a particular function in an organism / a group of cells of the same type performing the same function within the body
  15. Cell
    The simplest entity that has all the properties of life / the basic unit of life; cells are bounded by a lipid-containing membrane and are generally capable of independent reproduction
  16. Organelle
    A structure within a cell that performs a specific function / a complex cytoplasmic structure with a characteristic shape that performs one or more specialized functions
  17. Molecule
    A cluster of atoms held together by chemical bonds
  18. Biological Molecules
    molecules derived from living systems; the four major types are carbohydrates, lipids, proteins and nucleic acids
  19. Asexual Reproduction
    a type of reproduction in which new individuals arise directly from one parent
  20. Sexual Reproduction
    a type of reproduction in which new individuals arise from the mating of two parents
  21. Gene
    (Gr. genos, birth or race) the biological unit of inheritance that transmits hereditary information from parents to offspring and controls the appearance of a physical, behavioral, or biochemical trait; a gene is specific discrete portion of the DNA molecule in a chromosome that encodes an rRNA molecule
  22. Species
    a taxonomic group of organisms whose members have very similar structural traits and who can interbreed with each other in nature
  23. Genus
    (pl. genera) a taxonomic group of very similar species of common descent
  24. Family
    a taxonomic group comprising members of similar genera
  25. Order
    a precise arrangement of structural units and activities; also in taxonomy, a taxonomic group comprising members of similar families
  26. Class
    A taxonomic group comprising members of similar orders
  27. Phylum
    (pl. phyla) a major taxonomic group just below the kingdom level, comprising members of similar classes all with the same general body plan; equivalent to the division in plants
  28. Division
    a taxonomic group of similar classes belonging to the same phylum, which is often called a division in the gingdoms of plans or fungi
  29. Kingdom
    A taxonomic group composed of members of similar phyla, i.e., Animal, Plantae, Fungi, and Prostista
  30. Domain
    A taxonomic group composed of members of similar kingdoms
  31. Adaptation
    (L. adaptere, to fit) a particular form of behavior structure, or physiological process that makes an organisim better able to survivie and reproduce in a particular environment
  32. Natural selection
    t
  33. Natural Selection
    the increased survival and reproduction of individuals better adapted to the environment
  34. Ecology
    The scientific study of how organisms interact with their environment and with each other and of the mechanisms that explain the distribution and abundance of orgainisms
  35. Population
    a group of individuals of the same species living in a particular area
  36. Community
    Two or more populations of different interacting species occupying the same area
  37. Ecosystem
    a community of organisms interacting with a particular environment
  38. Biosphere
    (Gr. bios, live + sphaira, sphere) that part of the planet that supports life; includes the atmosphere, water, and the outer few meters of the Earth's crust
  39. Scientific Method
    a series of steps for understanding the natural world based on experimental testing of a hypothesis, a possible mechanism for how the world functions
  40. Scientific Method Steps
    • 1. identify a problem
    • 2. propose a hypothesis
    • 3. make a prediction
    • 4. test the prediction
    • 5. draw a conclusion
  41. Hypothesis
    a possible answer to a question about how the world works that can be tested by means of scientific experimentation
  42. Prediction
    in the scientific method an experimental result expected if a particular hypothesis is correct
  43. Control
    a check of a scientific experiment based on keeping all factors the same except for the one in question
  44. Experimental
    during the aplication of the scientific method, the phase involving the carefully planned and measured test of the hypothesis
  45. Theory
    a general hypothesis that is repeatedly tested but never disproved

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