Bio Ex1

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KinjoSushi
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282598
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Bio Ex1
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2014-09-10 01:32:56
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Bio Ex1
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  1. The four organic molecules found in all living systems
    are carbohydrates, nucleic acids, lipids, and ________.
    proteins
  2. The chemical and physical processes that are involved
    in energy and molecular transformations in living organisms are collectively
    termed ________.
    metabolism
  3. Organisms made up of one cell are said to be ________.
    unicellular
  4. A group of similar organisms capable of interbreeding
    and producing fertile offspring is a
    species
  5. The ability to stand upright and walk on two legs is
    ________.
    bipedalism
  6. Humans can grasp objects between their thumbs and
    fingers because the thumb is ________.
    opposable
  7. A group of tissues working together for a common
    purpose is known as a(n) ________.
    organ
  8. Factors that are varied during an experimental
    procedure are called ________.
    variables
  9. A(n) ________ is a tentative statement about the
    natural world that can lead to a testable deduction.
    hypothesis
  10. The process by which an individual makes a
    generalization after examining specific cases is ________ reasoning.
    inductive
  11. The first step of the scientific method is ________.
    observation
  12. A properly designed controlled experiment should
    include both an ________ group and a ________ group.
    experimental, control
  13. ) Data obtained from scientific experiments can best
    be displayed in a ________, which can be used to explain the results of an
    experiment as well.
    graph
  14. ) Information that takes the form of a testimonial is
    considered to be ________, not scientific.
    anecdotal
  15. The application of scientific knowledge to improve the
    condition of humans is known as
    technology
  16. The pure form of matter that cannot be broken down
    into a simpler form is a(n) ________.
    element
  17. Atoms bond to one another to form a stable association
    called a(n)________.
    molecule
  18. Atoms react with one another and form chemical bonds
    in order to ________.
    fill the outermost shell of electrons
  19. Molecules that are polar and attracted to water are
    ________; molecules that are nonpolar and therefore not attracted to water are
    ________.
    hydrophilic, hydrophobic
  20. A substance that helps to maintain a stable pH is a(n)
    ________.
    buffer
  21. ) Large organic molecules that are composed of
    thousands of smaller molecules bonded to one another are known as ________.
    macromolecules
  22. The process by which cells break down organic
    macromolecules into their subunits is ________.
    hydrolysis
  23. ) In order for a cell to produce a fat, it must have
    one molecule of ________ and three ________.
    glycerol, fatty acids
  24. The structure of a cell membrane includes a modified
    form of lipid called a ________.
    phospholipid
  25. Cells that have a membrane-bound organelles and
    cytoplasm are classified as ________ cells.
    eukaryotic
  26. Many cells use tiny projections of their plasma
    membrane called ________ to increase the surface area relative to cell volume.
    microvilli
  27. Plasma membranes become less fluid when ________ is
    present.
    cholesterol
  28. Because the plasma membrane regulates the transport of
    molecules into and out of the cell by allowing only certain substances to pass,
    it is said to be ________.
    selectively permeable
  29. The net diffusion of water across a plasma membrane is
    known as ________.
    osmosis
  30. The movement of large molecules or large quantities of
    molecules into a cell is accomplished through ________; movement of these
    molecules out of the cell is accomplished through ________.
    endocytosis, exocytosis
  31. Plasma membrane proteins that can receive and transmit
    information across the membrane are known as ________ proteins.
    receptor
  32. The primary function of the ________ is to remove
    certain unwanted ions from the cell in exchange for molecules that the cell
    needs.
    sodium-potassium pump
  33. Molecules pass in and out of the nucleus through
    openings in the nuclear membrane called
    nuclear pores
  34. The ________ is surrounded by an outer membrane which
    encloses an inner membrane that is highly folded; this organelle is associated
    with the breakdown of chemical bonds in food.
    mitochondrion
  35. Microtubules and microfilaments compose the ________,
    which forms an internal network of support for the cell.
    cytoskeleton
  36. Chemical reactions that take place in living organisms
    are collectively known as the organism's ________.
    metabolism
  37. Anabolic reactions result in the ________
    (building/breakdown) of large molecules and therefore ________
    (require/release) energy.
    building, require
  38. Cellular respiration occurs in the ________
    (organelle) of the cell.
    mitochondria
  39. The only way that cells can produce ATP in the absence
    of oxygen is through the process of
    glycolysis
  40. Specialized epithelial tissues that produce and
    secrete a product are known as ________.
    glands
  41. Glands that secrete their product into a duct are
    classified as ________ glands.
    exocrine
  42. Epithelial tissues are classified according to the
    number of cell layers making up the tissue and ________.
    cell shape
  43. Spot desmosomes are actually ________ junctions which
    allow for slight flexibility in an epithelium.
    adhesion
  44. Connective tissue is unique because the cells secrete
    an ________ that can be a semi-liquid
    or hardened.
    extracellular matrix
  45. The protein fibers of a fibrous connective tissue
    matrix are embedded in a ________ that is made up of water, polysaccharides,
    and proteins.
    ground substance
  46. Connective tissue cells that produce collagen,
    elastic, and reticular fibers are the ________.
    fibroblasts
  47. Cells in cartilage that produce the ground substance are the ________.
    chondroblasts
  48. Skeletal muscle attaches to ________, which attaches
    the muscle to bone.
    tendons
  49. Cardiac muscle is located only in the ________.
    heart
  50. Nervous tissue is composed of two types of cells:
    ________ that conduct impulses and ________ that surround and protect these
    cells.
    neurons, glial cells
  51. A group of
    two or more tissues that function as a unit is a(n) ________.
    organ
  52. The presence of a suntan is due to increased activity
    of ________ in response to increased levels of ultraviolet radiation
    melanocytes
  53. A gland located in the dermis of the skin that helps
    to regulate body temperature is the ________ gland.
    sweat
  54. The ability of living organisms to maintain a constant
    internal environment despite changes in the external environment is ________.
    homeostasis

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