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Why are cells typically small in size?
Why are cells typically small in size?
- To resist mechanical forces better
- To store more genetic information
- To allow for efficient exchange of materials with the environment (correct)
- To regulate osmotic pressure effectively
What is the primary function of transport proteins in cell membranes?
What is the primary function of transport proteins in cell membranes?
- To facilitate the movement of molecules across the membrane (correct)
- To regulate the temperature inside the cell
- To store energy for cellular activities
- To provide structural support to the cell membrane
In which scenario would active transport be necessary?
In which scenario would active transport be necessary?
- Moving a hydrophobic molecule across the cell membrane
- Moving a molecule from an area of low concentration to an area of high concentration (correct)
- Moving a molecule from an area of high concentration to an area of low concentration
- Moving a small uncharged molecule through a protein channel
What type of molecules can pass directly through the cell membrane?
What type of molecules can pass directly through the cell membrane?
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Which process exhibits the fastest rate of molecule transport across a cell membrane?
Which process exhibits the fastest rate of molecule transport across a cell membrane?
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In diffusion, which direction do molecules naturally move in relation to the concentration gradient?
In diffusion, which direction do molecules naturally move in relation to the concentration gradient?
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What role does probability play in reaching equilibrium in diffusion?
What role does probability play in reaching equilibrium in diffusion?
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In osmosis, where does water move?
In osmosis, where does water move?
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What is the outcome of plant cells compared to animal cells in hypotonic solutions?
What is the outcome of plant cells compared to animal cells in hypotonic solutions?
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What is the purpose of designing experiments similar to the secret sucrose solution lab?
What is the purpose of designing experiments similar to the secret sucrose solution lab?
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