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Questions and Answers
What is the term used to describe the movement of molecules across the cell membrane without requiring cellular energy?
What is the term used to describe the movement of molecules across the cell membrane without requiring cellular energy?
- Endocytosis
- Passive transport (correct)
- Facilitated diffusion
- Active transport
At equilibrium, what happens to the concentration of the substance on both sides of the cell membrane?
At equilibrium, what happens to the concentration of the substance on both sides of the cell membrane?
- It remains the same (correct)
- It decreases
- It becomes zero
- It increases
What type of molecules pass through cell membranes most easily due to their properties?
What type of molecules pass through cell membranes most easily due to their properties?
- Nucleic acids
- Large and charged ions
- Proteins
- Small and uncharged molecules (correct)
How do proteins in the cell membrane facilitate the movement of certain molecules?
How do proteins in the cell membrane facilitate the movement of certain molecules?
Which type of transport involves the use of special protein carriers to help molecules move across the membrane?
Which type of transport involves the use of special protein carriers to help molecules move across the membrane?
What is the term used to describe the movement of molecules across the cell membrane without requiring cellular energy?
What is the term used to describe the movement of molecules across the cell membrane without requiring cellular energy?
Why do small and uncharged molecules pass through cell membranes most easily?
Why do small and uncharged molecules pass through cell membranes most easily?
How do proteins in the cell membrane help facilitate the movement of certain molecules?
How do proteins in the cell membrane help facilitate the movement of certain molecules?
What happens at equilibrium in terms of the concentration of a substance on both sides of the cell membrane?
What happens at equilibrium in terms of the concentration of a substance on both sides of the cell membrane?
Why do some large molecules and charged ions seem to pass through cell membranes quickly?
Why do some large molecules and charged ions seem to pass through cell membranes quickly?
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