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5 Written questions

5 Matching questions

  1. Differentiate between a Vacuole & Vesicle.
  2. Receptor - mediated endocytosi
  3. Cell Membrane Structure
  4. Transport Across Cell Membranes: Equilibrium
  5. Two types of Endocytosis:
  1. a a) phagocytosis - when cells "eat" by taking in large particles or other cells
    b) pinocytosis - when cells "drink" by taking in droplets of fluid
  2. b Vesicle transports contents
    Vacuole stores the ingested material
  3. c a state at which molecules are evenly distributed (the concentration is equal throughout the medium)
    - molecules continue moving but equilibrium is maintained
  4. d receptors, like antennae, detect specific compounds or cells and bind with them, triggering endocytosis.
  5. e Know and be able to label a phospholipid bilayer diagram

5 Multiple choice questions

  1. the reverse of endocytosis, whereby the membrane of vesicles or vacuoles fuses with the cell membrane and the stored contents are expelled from the cell.
  2. the diffusion of water molecules across a membrane (water molecules move from where they are more highly concentrated to where they are less concentrated)
  3. Peripheral proteins are partially embedded in the inside or outside surface of the membrane
  4. - salts - atoms - viruses
    - sugar - ions - bacteria
    - proteins (7? this is what was in the notes)
    most organelles are surrounded by membranes with the same structure as a cell membrane
  5. Loss of water in a plant cell resulting in WILTING

5 True/False questions

  1. Isotonic solutionhas the same solute concentration on both sides of the cell membrane. Equilibrium has been reached. EQUAL FLOW of water into and out of the cell

          

  2. The activities of a living cell depend on the ability of its membrane todiffusion of molecules across the cell membrane by way of transport proteins.

          

  3. ENDOCYTOSISthe reverse of endocytosis, whereby the membrane of vesicles or vacuoles fuses with the cell membrane and the stored contents are expelled from the cell.

          

  4. Three Types of Passive Transport 3.Facilitated Diffusiondiffusion of molecules across the cell membrane by way of transport proteins.

          

  5. Transport Across Cell Membranes: Concentration Gradientthe difference in concentration between two areas for any given molecule produces a gradient or path of movement in which molecules move toward areas where the concentration of particles is lower
    - molecules move down a concentration gradient