Movement across membranes

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Movement across membranes

• List the types of membrane transport and their
  energy source.

• Explain saturation, competition, and specificity
  for any transport mechanism and demonstrate these
  graphically.
• Write Ficks law of diffusion and predict how
  changes in concentration gradient, membrane
  surface area, resistance, thickness and
  temperature will change the rate of diffusion.

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Class problem Draw an epithelial cell with the
properties below. Label the mechanism and
direction of molecule movement across the
membrane.

• The epithelial cell moves the following across
  its membrane
• - O2 in and CO2 out basolateral side
• Na from the lumen to the ECF
• K from the ECF to the lumen
• C6H12O6 from the lumen to the ECF
• Hint 1 Consider concentration gradients.
• Hint 2 Use four or five membrane transport
  proteins.
• Hint 3 Mechanisms of movement include simple
  diffusion, facilitated
• diffusion,primary and secondary active
  transport, exocytosis.

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Objective 2

• Explain saturation, competition, and specificity
  for any transport mechanism and demonstrate these
  graphically.

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Objective 3

• Write Ficks law of diffusion and predict how
  changes in concentration gradient, membrane
  surface area, resistance, thickness and
  temperature will change the rate of diffusion.

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Ficks law of diffusion
Note text error
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