Question

1. match the structure or process to the letter in the diagram

phospholipid bilayer
osmosis
simple diffusion
facilitated diffusion
channel protein
circle correct answers in the following:
all movement in this diagram is (passive / active)
the cell membrane is (semipermeable / impermeable)
there is more glucose (inside / outside)
over time this cell will (shrink / swell )
solution outside cell is (hypertonic / hypotonic)

1. in the diagram draw an arrow that shows the direction the water will move - either into or out of cell.

then under the beaker write if the cell will - shrink, swell or be in equilibrium

1. match the items on the left with one of the letters on the right.

concentration
diffusion
equal amount of water inside and outside cell
osmosis
more water outside cell than inside
selectively permeable membrane

1. if a cell with 3% alcohol is placed into a solution of 10% alcohol and the alcohol can cross the

membrane, but water cannot go through, what will happen?

1. if a cell with 10% salt is paced in a solution of 3% salt and the salt is unable to move through the

membrane, but water can move through, what will happen?

1. if a cell with 5% alcohol is placed into a solution of 2 percent alcohol, and both alcohol and water can

cross the membrane, what will happen?

Explanation:

Step1: Identify cell - membrane components and transport mechanisms

Phospholipid bilayer is the main structure of the cell - membrane, which is labeled as B. Osmosis is the movement of water, and water is moving out of the cell in the diagram, so it is X. Simple diffusion is the movement of small non - polar molecules like oxygen, so it is Y. Facilitated diffusion is the movement of larger or polar molecules with the help of channel proteins, glucose movement is facilitated diffusion and it is Z. Channel protein is the structure that helps in facilitated diffusion, so it is A.

Step2: Determine the type of movement and membrane properties

All the movements in the diagram are passive as they do not require energy. The cell membrane is semipermeable as it allows some substances to pass through. There is more glucose outside the cell as glucose is moving into the cell. Over time, the cell will shrink as water is moving out (osmosis). The solution outside the cell is hypertonic as water is leaving the cell.

Step3: Analyze osmosis in beaker scenarios

a. The salt concentration inside and outside the cell is the same (10%), so there is no net movement of water, and the cell is in equilibrium.
b. The salt concentration outside the cell (2%) is lower than inside (10%), so water will move into the cell and the cell will swell.
c. The salt concentration outside the cell (30%) is higher than inside (10%), so water will move out of the cell and the cell will shrink.

Step4: Match definitions

Concentration is the percentage of a substance in a place, so it is B. Diffusion is the moving of gases like oxygen into or out of the cell, so it is A. Equal amount of water inside and outside the cell is related to equilibrium, but among the given options, it is not a perfect match. Osmosis is the movement of water into and out of the cell, so it is C. More water outside the cell than inside is related to a hypotonic situation for the cell, but among the given options, it is not a perfect match. Selectively permeable membrane allows some substances to pass through, but among the given options, it is not a perfect match.

Step5: Analyze alcohol and salt scenarios

1. Alcohol will move from an area of higher concentration (10% outside) to an area of lower concentration (3% inside) until equilibrium is reached.
2. Water will move from an area of lower salt concentration (3% outside) to an area of higher salt concentration (10% inside), so the cell will shrink.
3. Alcohol will move from an area of higher concentration (5% inside) to an area of lower concentration (2% outside) and water will also move to balance the concentration, so the cell may shrink as alcohol leaves and water follows to some extent.

Answer:

1. Phospholipid Bilayer: B

Osmosis: X
Simple Diffusion: Y
Facilitated Diffusion: Z
Channel Protein: A
All movement in this diagram is: Passive
The cell membrane is: Semipermeable
There is more glucose: Outside
Over time this cell will: Shrink
Solution outside cell is: Hypertonic

1. a. Equilibrium

b. Swell
c. Shrink

1. Concentration: B

Diffusion: A
Equal amount of water inside and outside cell: No perfect match in given options
Osmosis: C
More water outside cell than inside: No perfect match in given options
Selectively permeable membrane: No perfect match in given options

1. Alcohol will move into the cell until equilibrium is reached.
2. The cell will shrink as water moves into the cell.
3. Alcohol will move out of the cell and the cell may shrink as water follows the movement of alcohol to some extent.