Multiple Choice
Which of the following best describes what happens to a red blood cell when placed in a hypertonic solution?
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6. The Membrane
Osmosis
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Osmosis is best defined as the movement of:
A
Water molecules across a semi-permeable membrane into a region of low solute concentration
B
Solute molecules from an area of high concentration to an area of lower concentration
C
Water molecules across a semi-permeable membrane into a region of high solute concentration
D
Water molecules inside a cell that can't be transported out
E
Solute molecules from an area of low concentration to an area of higher concentration
Verified step by step guidance1
Understand the concept of osmosis: Osmosis is the movement of water molecules through a semi-permeable membrane from a region of low solute concentration to a region of high solute concentration.
Identify the key components involved in osmosis: These include water molecules, a semi-permeable membrane, and solute concentration gradients.
Recognize the direction of water movement: In osmosis, water moves towards the area with a higher solute concentration to balance the solute concentrations on both sides of the membrane.
Differentiate osmosis from diffusion: While diffusion involves the movement of solute molecules from high to low concentration, osmosis specifically refers to the movement of water molecules.
Apply the definition to the options given: The correct definition of osmosis is the movement of water molecules across a semi-permeable membrane into a region of high solute concentration.
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