Question: The rate at which a cell absorbs an external signalling molecule xx through the cell membrane can be described by the absorption function A(x)=5x/e 2x

The rate at which a cell absorbs an external signalling molecule xx through the cell membrane can be described by the absorption function

A(x)=5x/e2x

  1. Calculate A(x) and find a value for x such that the absorption function has a horizontal tangent line.
  2. What is the absorption rate at this value of x ?
  3. Find this tangent line.
  4. Would you expect this absorption function to be the same for all cell types and for all signalling molecules x?

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