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Questions and Answers
Which substances generally have a greater concentration inside the cell than outside the cell?
Which substances generally have a greater concentration inside the cell than outside the cell?
- K+, H+
- CO2, K+ (correct)
- CO2, O2
- O2, Na+, Ca2+, H+
Which substances generally have a greater concentration outside the cell than inside the cell?
Which substances generally have a greater concentration outside the cell than inside the cell?
- CO2, K+
- CO2, O2
- K+, H+
- O2, Na+, Ca2+, H+ (correct)
What determines whether a solute diffuses into or out of the cell?
What determines whether a solute diffuses into or out of the cell?
- The concentration gradient (correct)
- The size of the solute
- The shape of the solute
- The temperature of the cell
What are the two major categories of diffusion based on the movement of substances across the plasma membrane?
What are the two major categories of diffusion based on the movement of substances across the plasma membrane?
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What determines whether a substance moves across the plasma membrane unassisted or assisted by a protein?
What determines whether a substance moves across the plasma membrane unassisted or assisted by a protein?
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