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Questions and Answers
Which process involves the movement of molecules from an area of higher concentration to an area of lower concentration without the use of a carrier molecule?
Which process involves the movement of molecules from an area of higher concentration to an area of lower concentration without the use of a carrier molecule?
- Osmosis
- Simple diffusion (correct)
- Facilitated diffusion
- Active transport
In facilitated diffusion, how do important molecules enter the cell?
In facilitated diffusion, how do important molecules enter the cell?
- By moving from low to high concentration
- Through active transport
- Through specific protein channels or carrier proteins (correct)
- By direct absorption through the cell membrane
What is the effect of a hypertonic solution on water molecules?
What is the effect of a hypertonic solution on water molecules?
- They remain stagnant
- They enter and exit the cell at the same rate
- They move into the cell via osmosis
- They tend to move out of the cell via osmosis (correct)
Which type of solution has the same water potential as the inside of the cell?
Which type of solution has the same water potential as the inside of the cell?
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What distinguishes facilitated diffusion from simple diffusion?
What distinguishes facilitated diffusion from simple diffusion?
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What happens in a hypotonic solution?
What happens in a hypotonic solution?
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How does water move during osmosis?
How does water move during osmosis?
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Which statement about hypotonic solutions is accurate?
Which statement about hypotonic solutions is accurate?
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What characterizes isotonic solutions?
What characterizes isotonic solutions?
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