Multiple Choice
Which of the following experimental procedures would best test whether osmosis has occurred in a biological sample?
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6. The Membrane
Osmosis
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Which of the following processes enables cells to take in water from their surroundings?
A
Active transport
B
Osmosis
C
Endocytosis
D
Facilitated diffusion of ions
Verified step by step guidance1
Step 1: Begin by understanding the concept of osmosis. Osmosis is the movement of water molecules across a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration, driven by a concentration gradient.
Step 2: Compare osmosis with active transport. Active transport requires energy (ATP) to move substances against their concentration gradient, but it is not specifically for water movement.
Step 3: Examine endocytosis. Endocytosis is a process where cells engulf substances into vesicles, but it is not directly related to the passive movement of water molecules.
Step 4: Consider facilitated diffusion. Facilitated diffusion involves the passive transport of ions or molecules through protein channels, but it does not specifically describe the movement of water molecules.
Step 5: Conclude that osmosis is the correct process enabling cells to take in water from their surroundings, as it specifically refers to the passive movement of water across a membrane.
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