Do all membranes have the same composition of lipids and proteins? Why or why not?
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How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

Monitor and apply fix up stratorgies

Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?