Select the INCORRECT definition for osmosis.
1. Osmosis is the movement of water molecules from a dilute solution to a concentrated solution across a partially permeable membrane.
2. Osmosis is the movement of molecules from a dilute solution to a concentrated solution across a membrane.
3. Osmosis is the movement of water molecules from a higher to lower water concentration across a partially permeable membrane.
2. Osmosis is the movement of molecules from a dilute solution to a concentrated solution across a membrane.
The incorrect definition for osmosis is:
2. Osmosis is the movement of molecules from a dilute solution to a concentrated solution across a membrane.
Osmosis specifically refers to the movement of water molecules, not all molecules, from a dilute solution to a concentrated solution across a partially permeable membrane.
To select the incorrect definition for osmosis, let's analyze each option:
1. Osmosis is the movement of water molecules from a dilute solution to a concentrated solution across a partially permeable membrane.
This definition is correct. Osmosis involves the movement of water molecules from a less concentrated solution (dilute) to a more concentrated solution (concentrated) through a partially permeable membrane.
2. Osmosis is the movement of molecules from a dilute solution to a concentrated solution across a membrane.
This definition is incorrect. Osmosis specifically refers to the movement of water molecules, not all molecules. It is a special type of passive transport where only water molecules move across a membrane, driven by the concentration gradient.
3. Osmosis is the movement of water molecules from a higher to lower water concentration across a partially permeable membrane.
This definition is incorrect. Osmosis actually involves the movement of water molecules from a lower water concentration (dilute solution) to a higher water concentration (concentrated solution) through a partially permeable membrane.
Based on the above analysis, option 2 is the incorrect definition for osmosis.