Open Question
What would happen if the tubing with the yellow band was placed in a beaker of distilled water?
14. Solutions
Osmosis
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Which of the following is not required for osmosis to occur?
A
Water molecules
B
A semipermeable membrane
C
Energy input
D
A concentration gradient
Verified step by step guidance1
Understand the concept of osmosis: Osmosis is the movement of water molecules through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration.
Identify the components necessary for osmosis: Water molecules are essential as they are the ones moving. A semipermeable membrane is required to allow only certain molecules to pass through, and a concentration gradient is needed to drive the movement of water.
Recognize that osmosis is a passive process: It does not require an external energy input. Instead, it relies on the natural kinetic energy of water molecules and the concentration gradient.
Evaluate the options given: Water molecules, a semipermeable membrane, and a concentration gradient are all necessary for osmosis to occur.
Conclude that energy input is not required for osmosis: Since osmosis is a passive process, it does not need additional energy to take place.
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