Question

cell membrane and transport
match the structure/process to the letter:

1. phospholipid bilayer
2. simple diffusion
3. channel protein
4. osmosis
5. facilitated diffusion
6. aquaporin
7. this cell would be in a hypertonic / hypotonic / isotonic solution.
8. all of the processes in the image are examples of active / passive transport.
9. the cell membrane can be described as semi - permeable / impermeable
10. there is more glucose inside / outside the cell. (hint: look at the direction it is moving)
11. over time, this cell will shrink / swell
12. oxygen enters the cell by diffusion / osmosis .
13. water enters the cell by diffusion / osmosis .

Explanation:

1. The phospholipid bilayer is the basic structure of the cell membrane, represented by \(C\).
2. Simple diffusion is the movement of small non - polar molecules (like oxygen) across the membrane without the help of proteins, which is \(X\).
3. A channel protein is a type of protein that forms a channel for molecules to pass through. In the diagram, \(B\) is a channel protein.
4. Osmosis is the movement of water across a semi - permeable membrane. Here, \(Z\) represents osmosis.
5. Facilitated diffusion is the movement of molecules (like glucose) across the membrane with the help of carrier proteins. \(Y\) is facilitated diffusion.
6. Aquaporin is a specific channel protein for water, which is \(B\) (since \(B\) is a channel protein and in the context of water transport).
7. Since water is moving out of the cell (osmosis direction \(Z\)), the cell is in a hypertonic solution (higher solute concentration outside).
8. All the processes (\(X\), \(Y\), \(Z\)) are examples of passive transport (no energy input as molecules move down their concentration gradient).
9. Glucose is moving into the cell (\(Y\) direction), so there is more glucose outside the cell.
10. As water is moving out (\(Z\)), the cell will shrink.
11. Oxygen is a small non - polar molecule, so it enters by diffusion.
12. Water enters by osmosis (through aquaporin, which is a form of facilitated diffusion for water, but the general term for water movement across the membrane is osmosis).

Answer:

1. \(C\)
2. \(X\)
3. \(B\)
4. \(Z\)
5. \(Y\)
6. \(B\)
7. hypertonic
8. passive
9. outside
10. shrink
11. diffusion
12. osmosis