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5 Written questions

5 Matching questions

  1. Receptor - mediated endocytosi
  2. Protein position within a membrane:
    Peripheral proteins
  3. Types of Transport Across Membranes: Passive Transport
  4. Protein position within a membrane:
    Integral proteins
  5. Turgor pressure
  1. a receptors, like antennae, detect specific compounds or cells and bind with them, triggering endocytosis.
  2. b movement across cell membranes without an input of energy
    2 reasons molecules move.
    1. Brownian Motion
    2. Concentration gradients
  3. c Peripheral proteins are partially embedded in the inside or outside surface of the membrane
  4. d The cell wall of a plant resists the pressure of a water-filled vacuole keeping the plant firm
  5. e Integral proteins extend through the entire bilayer and project from both surfaces

5 Multiple choice questions

  1. all matter is made of tiny particles
  2. the use of vesicles to facilitate movement of substances that are too large to enter or exit the cell via transport proteins
  3. medication can be placed in a flat transdermal patch that sticks to the skin. A semi-permeable membrane lining the inner surface allows drugs to diffuse out of the patch at a slow, constant rate.
  4. the movement of molecules and ions against the concentration gradient which requires ATP energy and carrier proteins to pump these molecules from an area of low solute concentration to an area of high solute concentration.
  5. has 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

5 True/False questions

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

          

  2. Three Types of Passive Transport 2.Osmosisthe diffusion of water molecules across a membrane (water molecules move from where they are more highly concentrated to where they are less concentrated)

          

  3. EXOCYTOSISthe 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. Transport proteinshave 3-D shapes that make them highly selective, recognizing atoms or molecules by shape, size or charge.

          

  5. Transport Across Cell Membranes: Selective Transportthe movement of only certain substances across the cell membrane

          

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