Membranes are essential components of all cells

Membranes are essential components of all cells.

  • Briefly describe the structure of a eukaryotic plasma membrane,  identifying at least two component macromolecules and describing what  their basic function is within the membrane.

 The plasma membrane protects the integrity of the interior of the cell by allowing certain substances in, while keeping other substances out.

  • Summarize the manner in which small molecules are permitted to  pass through the membrane ensuring you explain the difference between  passive, facilitated, active, and coupled transport by comparing and  contrasting them.
  • Finally, explain the difference between endocytosis and  exocytosis and provide an example of a molecule (remembering to state  its function) that is transferred using this method.


Your written assignment should  be submitted in a Word document (or similar program) and should be at  least 2-3 pages in length, double-spaced with 1-inch margins, and  written in Times New Roman size 12 font.  You should provide a word  count at the     end of your written assignment. Cite any reference(s) you use in the  preparation of your essay using proper APA format.

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