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Ch. 7 Part 2- Cell Transport

Quiz by Kate Downey

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75 questions
Show answers
  • Q1
    The movement of molecules from an area of higher concentration to an area of lower concentration is called
    osmosis
    active transport
    endocytosis
    diffusion
    30s
  • Q2
    In osmosis, water always moves towards the _______ solution, that is, toward the solution with the _____ solute concentration.
    hypertonic…lesser
    hypertonic…greater
    hypotonic…greater
    isotonic….greater
    30s
  • Q3
    Facilitated diffusion uses energy.
    True
    False
    30s
  • Q4
    Diffusion of water across a selectively permeable membrane is called
    active transport
    diffusion
    osmosis
    passive transport
    30s
  • Q5
    A plant cell is placed in a solution whose solute concentration is twice as great as the concentration of the cell cytoplasm. The cell membrane is selectively permeable, allowing water but not the solutes to pass through. What will happen to the cell?
    No change
    The cell will shrivel because of active transport of water.
    The cell will shrivel because of osmosis.
    The cell will swell because of osmosis.
    30s
  • Q6
    Red blood cells have a salt content of 0.9%. When a microbiologist places red blood cells in pure water, osmosis occurs. What net movement of a substance occurs in this instance of osmosis?
    water molecules move out of the cells
    salt ions move out of the cells.
    water molecules move into the cells.
    salt ions move into the cells.
    30s
  • Q7
    The movement of water across a selectively permeable membrane is known as
    phagocytosis
    endocytosis
    exocytosis
    osmosis
    30s
  • Q8
    A substance that moves across a cell membrane without using the cell’s energy tends to move
    oward the area where it is more concentrated
    away from the area where it is more concentrated
    away from the area of equilibrium
    away from the area where it is less concentrated
    30s
  • Q9
    Which of the following is an example of ACTIVE TRANSPORT?
    osmosis
    diffusion
    facilitated diffusion
    none of the above
    30s
  • Q10
    Osmosis uses energy.
    False
    true
    30s
  • Q11
    Which of the following would diffuse through a cell membrane the most easily?
    a large polar molecule
    a large nonpolar molecule
    a small nonpolar molecule
    a small polar molecule
    30s
  • Q12
    A nursing infant is able to obtain disease-fighting antibodies, which are large protein molecules, from its mother’s milk. These molecules probably enter the cells lining the baby’s digestive tract via
    osmosis
    exocytosis
    endocytosis
    diffusion
    30s
  • Q13
    A freshwater paramecium is placed in salt water. Which of the following events would most likely occur? (Ask yourself where the water in the paramecium is going!!)
    swelling of the cell until it bursts
    shriveling of the cell
    an increase in the action of its contractile vacuole
    swelling of the cell until it becomes turgid
    30s
  • Q14
    The molecules responsible for membrane transport are
    Lipids
    Carbohydrates
    Steroids
    Proteins
    30s
  • Q15
    In lab, you use a special balloon that is permeable to water but not sucrose to make an “artificial cell.” The balloon is filled with a solution of 20% sucrose and 80% water and is dropped in a beaker containing a solution of 40% sucrose and 60% water. Which of the following will occur?
    Water will enter the balloon
    Sucrose will enter the balloon
    Sucrose will leave the balloon
    Water will leave the balloon
    30s

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