Membrane Structure and Function

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Across
  1. 5. Matrix;nonliving substance secreted by some animal cells; is composed of proteins and polysaccharides
  2. 6. Protein that forms a channel to allow a particular molecule or ion to cross the plasma membrane
  3. 7. goes toward lower concentration; needs concentration gradient; example(s): lipid-soluble molecules and gases; movement of molecules or ions from a region of higher to lower concentration; it requires no energy and tends to lead to an equal distribution (equilibrium)
  4. 8. Protein in plasma membranes that has an attached carbohydrate chain; assembled in the Golgi apparatus
  5. 9. Type of Transport; goes toward lower concentration; requires channels or carrier and concentration gradient; example(s): some sugars and amino acids; passive transfer of a substance into or out of a cell along a concentration gradient by a process that requires a protein carrier
Down
  1. 1. A steroid found in the plasma membrane of animal cells and from which other types of steroids are derived
  2. 2. Type of Transport
  3. 3. Type of Transport; goes toward outside or inside; requires vesicle utilization; example(s): macromolecules; movement of substances, usually large particles, across the plasma membrane using vesicles
  4. 4. Model for the plasma membrane based on the changing location and pattern of protein molecules in a fluid phospholipid bilayer
  5. 8. Lipid in plasma membranes that contains an attached carbohydrate chain; assembled in the Golgi apparatus
  6. 10. Type of Transport; goes toward higher concentration; requires carrier plus energy; example(s): sugars, amino acids and ions; use of a plasma membrane carrier protein to move a molecule or ion from a region of lower concentration to one of higher concentration; it opposes equilibrium and requires energy