What will happen to a cell that is placed in a solution containing a high concentration of sugar, a molecule that cannot pass across the cell membrane?

The cell will shrink.

Explanation:

Water moves from an area which is having a low concentration of solute to an area that is having a high concentration solute through a biological membrane and this movement of water is called osmosis.

So when a cell is placed in a solution which is having high sugar concentration than the water from the cell will move towards the high solute concentration that means water will move out of the cell which will cause the shrinking of cell.  

Therefore cell will shrink if it is placed in a solution containing high sugar concentration.

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.