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Consider a simple spherical model cell that consists of cytoplasm and a plasma membrane.
The cell's initial volume is 2 nL and contains 0.2 M protein. The cell is placed in a large volume of 0.05 M CaCl2. Neither Ca++ nor Cl- can cross the plasma membrane and enter the cell. Are the 0.05 M CaCl2 solutions hypotonic, isotonic or hypertonic relative to the osmolarity inside the cell? Describe what happens to the mathematically cell as it achieves equilibrium in this new environment. What will be the final osmolarity of the cell? What will be its final volume?
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what are the physiological adaptation shown my prey as defence
Into which two groups can the nitrogen-containing bases that form DNA and RNA be classified? What is the criterion used in that classification? The nitrogen-containing bases th
Describe two pieces of evidence indicating that speciation does not always occur at the same rate. Some species of moths on the Hawaiian Islands appear to have evolved during t
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What is the clitellum of earthtworms and where it is located? The clitellum is a special region of the annelid constituted by rings (metameres) with reproductive function. It c
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