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5 Written questions

5 Matching questions

  1. Two types of Endocytosis:
  2. Active Transport
  3. Transport proteins
  4. Cell Membrane Function: 6 materials a membrane prevents from entering the cell
  5. Turgor pressure
  1. a have 3-D shapes that make them highly selective, recognizing atoms or molecules by shape, size or charge.
  2. b - 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
  3. c 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.
  4. d a) phagocytosis - when cells "eat" by taking in large particles or other cells
    b) pinocytosis - when cells "drink" by taking in droplets of fluid
  5. e The cell wall of a plant resists the pressure of a water-filled vacuole keeping the plant firm

5 Multiple choice questions

  1. receptors, like antennae, detect specific compounds or cells and bind with them, triggering endocytosis.
  2. 1. transport raw materials into the cell (and out of)
    2. transport manufactured products and wastes out of the cell
    3. prevent unwanted matter from entering the cell
    4. prevent the escape of matter needed to perform cellular functions
  3. all matter is made of tiny particles
  4. Cell membrane molecules are in constant motion (drifting past each other) resulting in:
    a) membrane flexibility
    b) cell's ability to change shape
  5. a) carrier proteins - facilitate the diffusion of glucose across the cell membrane
    b) channel proteins - have tunnel-like pores filled with water that allow charged ions in and out of the cell

5 True/False questions

  1. Protein position within a membrane:
    Peripheral proteins
    Peripheral proteins are partially embedded in the inside or outside surface of the membrane


  2. Phospholipid bilayereach phospholipid molecule has a head that is hydrophilic (water-loving) and two tails that are hydrophobic (water-fearing)


  3. Cell Membrane Function: Apoptosiswhen the lysosome bursts and releases it's digestive enzymes into the cell resulting in cell destruction


  4. Hypotonic solution,has a lower concentration of solute compared to inside the cell


  5. Membranes at Work 2. Kidney Dialysisfilters toxic wastes that accumulate in the blood while retaining necessary proteins, glucose, amino acids & ions


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