To find answers to an osmosis worksheet, read descriptions of osmosis on websites such as BiologyCorner.com and BBC.co.uk. In addition, watch videos and animations of osmosis on KhanAcademy.org and the McGraw-Hill Education website, MHEducation.com.
Osmosis is the movement of water across a semipermeable membrane from an area of low solute concentration to an area of high solute concentration. A solute can be any substance dissolved in water, but is usually salt or sugar. The phrase "water follows salt" is a simple way to remember the direction of movement in osmosis.
Scientists often use the terms "hypotonic" and "hypertonic" to describe osmosis. A hypotonic solution has a lower salt concentration than a cell, while a hypertonic one has a higher salt concentration. Water moves into a hypertonic solution by osmosis, but moves out of a hypotonic one.