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 11
A cell is placed in a solution and water moves out of the cell. What type of solution is the cell in?
A cell is placed in an isotonic solution. What will happen to the cell?
Describe how temperature can affect the rate of diffusion across the cell membrane.
Describe the difference between passive and active transport across the cell membrane.
Describe the function of channel proteins in the cell membrane.
Describe the process of receptor-mediated endocytosis.
Describe the role of glycoproteins in the cell membrane.
Describe the term 'fluid mosaic model' in relation to the cell membrane.
Explain the difference between phagocytosis and pinocytosis.
Explain the importance of membrane fluidity for cell function.
Explain the role of cholesterol in the cell membrane.
Explain why glucose requires a transport protein to cross the cell membrane.
Explain why ions cannot easily cross the phospholipid bilayer of the cell membrane.
Explain why water moves into a cell placed in a hypotonic solution.
A cell is actively transporting calcium ions out of its cytoplasm into the extracellular fluid, even though the concentration of calcium is higher outside the cell. What does this indicate about the transport process?
A scientist observes that a cell placed in a certain solution swells and eventually bursts. Based on this observation, explain the direction of water movement and the type of solution the cell was placed in.
Describe how the presence of aquaporins in the cell membrane affects the rate of osmosis.
Describe the effect of removing cholesterol from the cell membrane on membrane fluidity at low and high temperatures.
Explain how the structure of the phospholipid bilayer contributes to the selective permeability of the cell membrane.
Explain why the rate of facilitated diffusion can reach a maximum, even if the concentration gradient continues to increase.
