Cell Membrane and Transport
Biology ⇒ Cell Biology
Cell Membrane and Transport starts at 7 and continues till grade 12.
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See sample questions for grade 10
A cell is placed in a solution and shrinks. What type of solution is it in?
A cell uses energy to move molecules from low to high concentration. What is this process called?
Describe the direction of water movement when a cell is placed in an isotonic solution.
Describe the role of carbohydrate chains on the outer surface of the cell membrane.
Describe what happens to an animal cell placed in a hypotonic solution.
Explain why glucose cannot cross the cell membrane by simple diffusion.
Explain why plant cells do not burst when placed in a hypotonic solution.
What is the function of channel proteins in the cell membrane?
What is the main difference between endocytosis and exocytosis?
What is the main difference between simple diffusion and facilitated diffusion?
What is the main function of the cell membrane?
What is the role of glycoproteins in the cell membrane?
Which type of transport moves substances from a region of low concentration to a region of high concentration?
A cell is placed in a solution and begins to swell until it bursts. What does this indicate about the tonicity of the solution relative to the cell, and what process is responsible for the movement of water?
A cell is placed in a solution containing a high concentration of urea, a small polar molecule. The cell membrane is impermeable to urea. Predict and explain what will happen to the cell over time.
A scientist observes that a certain molecule can cross the cell membrane only when ATP is present. Explain the mechanism by which this molecule is likely transported across the membrane.
Describe the role of cholesterol in maintaining the stability of the cell membrane at different temperatures.
Explain how the structure of the phospholipid bilayer contributes to the selective permeability of the cell membrane.
Explain why the sodium-potassium pump is essential for nerve cell function.
