Biology Test 2

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kcarson
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224104
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Biology Test 2
Updated:
2013-06-16 22:54:03
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biology test
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biology chapters 5-8
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  1. A plasma membrane is _____?
    The edge of life; The boundary that encloses a living cell
  2. A description of membrane structure depicting a cellular membrane as a mosaic of diverse protein molecules embedded in a fluid bilayer of phospholipid molecules is ____?
    Fluid Mosaic
  3. What is it called that allows some substances to cross more easily that others?
    selectively permeable / selective barrier/ semi-permeable
  4. Internal membrane is ____?
    only in eukaryotes; is the compartmentalization of organelles and location of enzymes for metabolism and photosynthesis
  5. Phospholipids are ___?
    Key ingredients of biological membranes. Were among the first organic molecules formed from chemical reactions on early earth
  6. The movement of molecules from areas of high concentration to areas of low concentration is ___?
    diffusion
  7. A region along which the density of a chemical substance increases or decreases. Cells often maintain _______ ________ of ions across their membranes. When a gradient exists, substances tend to move from where they are more concentrated to where they are less concentrated
    concentration gradient
  8. When a cell doesn't have to work when molecules diffuse across it's membrane is called ____?
    passive transport
  9. Materials diffuse _____ a concentration gradient
    down
  10. Speed depends on _____ and _____.
    speed; temperature
  11. What has a hydrophobic center and hydrophilic outer?
    integral protein/ amphipathic
  12. Diffusion using integral proteins is ____?
    facilitated diffusion
  13. Facilitated diffusion is important for ___?
    water, polar molecules, and ions
  14. The diffusion of water across a selectively permeable membrane is ____.
    Osmosis
  15. A solution that has more solute than water is ____?
    hypertonic
  16. A solution that has less solute than water is ____?
    hypotonic
  17. A solution with equal concentrations of water is ____?
    isotonic
  18. if an animal cell is placed in a hypotonic solution, the cell will ____?
    A. swell
    B. normal
    C. shrink
    A. swell
    (this multiple choice question has been scrambled)
  19. A plant cell is placed in a hypotonic solution will ____?
    A. swell
    B. normal
    C. shrink
    B. normal
    (this multiple choice question has been scrambled)
  20. An animal cell placed in a hypertonic solution will ____?
    A. swell
    B. normal
    C. shrink
    C. shrink
    (this multiple choice question has been scrambled)
  21. A plant cell placed in a isotonic solution will ___?
    A. normal/ turgid
    B. shrink/ plasmolyzed
    C. limp/flaccid
    C. limp/flaccid
    (this multiple choice question has been scrambled)
  22. An plant cell that is placed in a hypertonic solution will ___?
    A. shrink
    B. turgid
    C. limp
    A. shrink
    (this multiple choice question has been scrambled)
  23. ____ requires energy and allows cells to gain material in short supply, moves materials against concentration gradient and involves integral proteins.
    active transport
  24. This is the elimination of cellular waste, products, or mucous, the fusion of vesicle membranes with plasma membranes and aids in cell growth
    exocytosis
  25. This has 3 parts.
    Endocytosis
  26. The receptors on cells surface bind with materials needed by the cell.
    receptor mediated endocytosis
  27. This is the ingestion of "large" amounts of material and forms a vesicle or vacoule
    phagocytosis
  28. This is the ingestion of dissolved materials - non-selective
    pinocytosis
  29. this has 2 basic kinds of energy.
    cellular energy
  30. This is energy in motion.
    Kinetic Energy
  31. This is energy that possesses as a result of its location or structure.
    Potential energy
  32. which best describes the structure of a cell membrane?
    A. phospholipids between 2 layers of protein
    B. proteins between two bilayers of phospholipids
    C. proteins embedded in a bilayer of phospholipids
    D. a bilayer of protein coating a layer of phospholipids
    E. Cholesterol embedded in a bilayer of phospholipids
    C. proteins embedded in a bilayer of phospholipids
    (this multiple choice question has been scrambled)
  33. A protein on the outside or inside of a cell is a ____ protein.
    peripheral
  34. the following functions are functions of what? Transport, cellular recognition, adhesive proteins, communications, and receptors
    proteins
  35. the plasma membrane is ____?
    selectively permeable
  36. this is the capacity to do something.
    energy
  37. this type of metabolic reaction releases energy.
    exergonic
  38. this type of metabolic reaction requires energy.
    endergonic
  39. ATP stands for ___?
    Adenosine triphosphate
  40. Enzymes do what?
    lower the amount of energy necessary for a reaction to take place and work to either form new bonds or break existing bonds
  41. Catobolic is ____ to _____.
    big to small
  42. anabolic is ____ to _____.
    small to big
  43. The basics of metabolism is _____.
    large molecules break down w/ the aid of enzymes
  44. energy is formed through ___
    metabolism.
  45. the 3 catabolic pathways ____.
    start with glucose or other suitable carbohydrate.
  46. Aerobic respiration ____.
    uses oxygen.
  47. C_H_O_ + _O2 --> _CO2 + _H2O + ~38 ATP
    Fill in the blanks.
    6, 12, 6; 6; 6; 6;
  48. The four steps in the aerobic respiration are ___, ___, ___, & ___.
    Glycolysis, Aceytl CoA, Krebs Cycle or Citric Acid Cycle, and Oxidative Phosphorylation
  49. Where does the 1st step of the aerobic respiration occur?
    cytoplasm
  50. Glucose is converted into 2 molecules of ___.
    pyruvate
  51. In the glycolysis step, it yields how many molecules of ATP?
    2
  52. The other steps occur where?
    mitochondria
  53. How many ATP's form from the last step?
    32
  54. If you have no ___ you will have no energy transfer in the oxidative phosphorylation step.
    O2
  55. There are ___ molecules of ATP and CO2 formed in the Krebs cycle/citric acid cycle.
    2
  56. Anaerobic respiration requires no ___, less ____ produced, and mainly occurs in ____.
    O2, energy, bacteria
  57. ______ is alcoholic or lactate and is also produces less energy and usually with yeast or fungi.
    Fermentation
  58. Plants, algae, and some bacteria are _____.
    autotrophs
  59. _____ depends upon visible light and chlorophyll and make their own food source using light.
    photoautotrophs
  60. ____ absorbs all visible light except green.
    Chlorophyll
  61. there are two important types of chlorophyll: ____ & _____. 
    Chlorophyll a & Chlorophyll b
  62. the structure of chloroplast is ____, ____, & ____.
    thylakoids, grana, & stroma
  63. Photosynthesis is the capturing of ___
    light
  64. light excites electrons within the ____.
    chloroplasts
  65. Chlorophyll a absorbs ____ light.
    red & violet
  66. Chlorophyll b absorbs ____ light.
    blue & orange
  67. Chloroplast is composed of stacks of _______ which form ____. Fluids within the chloroplast is called ____.
    thylakoids, grana, stroma
  68. the basic reaction is _____ + __H2O + __CO2 --> __O2 + C_H_O_ + __H2O
    sunlight; 12; 6; 6; 6,12,6; 6

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