BIO 110-03 Chapters 1-3

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ernest_thomasiii
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169430
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BIO 110-03 Chapters 1-3
Updated:
2012-10-01 17:42:13
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BIO 110
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Biology Notes
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  1. Why study Biology
    Biology tells how systems and organisms function and how we live, develop, modify and refine ideas about life.
  2. What are the molecules of life (Organic, Macro or Biomolecules)?
    • Nucleic acids
    • Proteins
    • Lipids
    • Carbohydrates
  3. What are nucleic acids?
    • DNA
    • RNA
  4. What are the most common elements in life?
    • C Carbon
    • H Hydrogen
    • O Oxygen
    • P Phosphorous
    • S Sulfur
    • N Nitrogen
  5. Life’s levels of organization are:
    • Atom
    • Molecule
    • Biomolecule
    • Organelle
    • Cells
    • Tissue
    • Organ
    • Organ systems
    • Organism
    • Population
    • Community
    • Ecosystem
    • Biosphere
  6. Metabolism
    Reaction by which cells acquire and use energy to grow, survive and reproduce.
  7. Energy
    Capacity to do work
  8. Nutrient
    Type of atom or molecule that has essential role in growth and survival and that an organism cannot make for itself
  9. Producers
    Consumers
    Decomposers
    • Autotroph
    • Heterotroph
    • Break down remains / waste.
  10. Life's Domains
    • Bacteria
    • Archaea
    • Eukarya
  11. Six Kingdoms
    • Archaebacteria
    • Eubacteria
    • Protists
    • Fungi
    • Plants
    • Animals
  12. Nature
    Everything that is not artificial
  13. Atoms
    Fundamental building blocks of all substances
  14. Molecules
    forms when two or more atoms of the same or different elements join in chemical bonds
  15. Population
    Group of individuals fo the same kind of organism in a specified area.
  16. Community
    All populations of all species in a specified area
  17. Ecosystem
    A community interacting with its physical and chemical environment
  18. Bioshpere
    Earth
  19. Homeostasis
    Sensing and adjusting conditions of internal environment to maintain favorable conditions.
  20. Shell model
    Helps us check an atom for vacancies
  21. Atoms are chemically inactive if...
    It has no vacancies in its outermost shell
  22. Electronegativity
    A measure of an atom’s ability to pull electrons from other atoms
  23. Chemical bond
    An attractive force that arises between two atoms when their electrons interact
  24. Compounds
    Molecules that consist of two or more different elements in proportions that do not vary
  25. Ion
    An atom with different numbers of electrons and protons
  26. Producers
    Acquire energy and simple raw materials from environmental sources and make their own food
  27. Consumers
    Cannot make their own food; they get energy and nutrients indirectly by eating producers and other organisms
  28. Receptor
    Molecule or cellular structure that responds to a specific form of stimulation
  29. DNA
    The signature molecule of life
  30. Development
    Orderly transformation of the first cell of a new individual into an adult
  31. Species
    Kind of organism
  32. Genus
    Group of species that share a unique set of features
  33. Isotope
    Atom has the same number of protons but different number of neutrons
  34. Ionic Bond
    Mutual attraction of two oppositely charged ions
  35. Covalent Bond
    Two atoms share a pair of electrons
  36. Hydrophilic
    Water-loving
  37. Hydrophobic
    Water-dreading
  38. Cohesion
    Molecules resist separating from one another
  39. pH
    Measure of the number of H+ ions in a solution
  40. Acids
    Donate hydrogen ions as they dissolve in water
  41. Bases
    Accept hydrogen ions as they dissolve in water
  42. Salt
    A compound that dissolves easily in water and releases ions other than H+ and OH-
  43. Radioisotope
    Unstable isotope that emits particles and energy when its nucleus disintegrates
  44. Tracer
    Molecule that has a detectable substance (such as a radioisotope) attached
  45. Buffer System
    A chemical partnership between a weak acid or base and its salt
  46. Properties of Water
    • Bonds to hydrophilic
    • Repels hydrophobic
    • Temperature stable
    • Expands when freezes
    • Cohesive
    • Capacity to dissolve substances
  47. Hydrogen Ions
    • Unbound proton
    • Have important biological effects
    • Form when water ionizes
  48. Buffers in the body
    • Cytoplasm
    • Blood plasma

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