Cell Transport Review Worksheet | PDF | Osmosis | Cell Membrane - Free Printable

Let's go through the Cell Transport Review Worksheet step by step and solve each section with explanations.

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Part 1: Complete the table by checking the correct column for each statement

We are given a table with three types of solutions: Isotonic, Hypotonic, and Hypertonic, and statements about their effects on cells.

#### Definitions:
- Isotonic solution: Equal solute concentration inside and outside the cell → no net movement of water.
- Hypotonic solution: Lower solute concentration outside the cell → water enters the cell → cell swells.
- Hypertonic solution: Higher solute concentration outside the cell → water leaves the cell → cell shrinks.

Now, evaluate each statement:

| Statement | Isotonic | Hypotonic | Hypertonic |
|---------|----------|-----------|------------|
| Causes a cell to swell | ✘ | ✔ | ✘ |
| Doesn't change the shape of a cell | ✔ | ✘ | ✘ |
| Causes osmosis | ✔ | ✔ | ✔ |
| Causes a cell to shrink | ✘ | ✘ | ✔ |

✔ Explanation:
- Swelling occurs in hypotonic solutions (water enters).
- No shape change happens in isotonic (balance).
- Osmosis happens in all solutions — it’s the movement of water across a membrane due to concentration differences.
- Shrinking occurs in hypertonic solutions (water leaves).

So the corrected table should be:

| Statement | Isotonic | Hypotonic | Hypertonic |
|---------|----------|-----------|------------|
| Causes a cell to swell | | ✔ | |
| Doesn't change the shape of a cell | ✔ | | |
| Causes osmosis | ✔ | ✔ | ✔ |
| Causes a cell to shrink | | | ✔ |

> Note: The original worksheet already has some Xs marked. Let’s confirm:
> - "Causes a cell to swell" → ✔ Hypotonic
> - "Doesn't change the shape..." → ✔ Isotonic
> - "Causes osmosis" → ✔ All three (so all columns should have X)
> - "Causes a cell to shrink" → ✔ Hypertonic

But in the original, “Causes osmosis” has X in Isotonic and Hypotonic, but not Hypertonic — that’s incorrect.

✔ Correction: Osmosis occurs in all three because water moves based on concentration gradient — even if there is no net movement (isotonic), osmosis still occurs, just in equilibrium.

So “Causes osmosis” should have ✔ in all three columns.

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Part 2: Match the term with its correct description

Terms:
a. energy
b. facilitated diffusion
c. endocytosis
d. passive transport
e. active transport
f. exocytosis
g. carrier protein
h. channel protein

Now match each description:

1. ___h__ Transport protein that provides a tube-like opening in the plasma membrane through which particles can diffuse
→ This is a channel protein (h)

2. ___a__ Is used during active transport but not passive transport
→ Energy is required for active transport, not passive → (a)

3. ___c__ Process by which a cell takes in material by forming a vacuole around it
→ Endocytosis (c)

4. ___d__ Particle movement from an area of higher concentration to an area of lower concentration
→ This is passive transport (d)

5. ___f__ Process by which a cell expels wastes from a vacuole
→ Exocytosis (f)

6. ___b__ A form of passive transport that uses transport proteins
→ Facilitated diffusion (b) – uses carrier or channel proteins

7. ___e__ Particle movement from an area of lower concentration to an area of higher concentration
→ This requires energy → Active transport (e)

8. ___g__ Transport protein that changes shape when a particle binds with it
→ Carrier protein (g)

✔ Final matching:
1. h
2. a
3. c
4. d
5. f
6. b
7. e
8. g

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Part 3: Match the term with its correct description

Terms:
a. transport protein
b. active transport
c. diffusion
d. passive transport
e. osmosis
f. endocytosis
g. exocytosis
h. equilibrium

Now match:

1. ___e__ The diffusion of water through a cell membrane
→ Osmosis (e)

2. ___d__ The movement of substances through the cell membrane without the use of cellular energy
→ Passive transport (d)

3. ___a__ Used to help substances enter or exit the cell membrane
→ Transport protein (a) – such as channels or carriers

4. ___b__ When energy is required to move materials through a cell membrane
→ Active transport (b)

5. ___h__ When the molecules of one substance are spread evenly throughout another substance to become balanced
→ Equilibrium (h)

6. ___g__ A vacuole membrane fuses (becomes a part of) the cell membrane and the contents are released
→ Exocytosis (g)

✔ Final answers:
1. e
2. d
3. a
4. b
5. h
6. g

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✔ Summary of Answers

#### Part 1: Table Corrections

| Statement | Isotonic | Hypotonic | Hypertonic |
|---------|----------|-----------|------------|
| Causes a cell to swell | | ✔ | |
| Doesn't change the shape of a cell | ✔ | | |
| Causes osmosis | ✔ | ✔ | ✔ |
| Causes a cell to shrink | | | ✔ |

> Note: "Causes osmosis" must be checked in all three columns.

#### Part 2: Matching (First set)

1. h
2. a
3. c
4. d
5. f
6. b
7. e
8. g

#### Part 3: Matching (Second set)

1. e
2. d
3. a
4. b
5. h
6. g

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🔍 Key Concepts Recap

- Osmosis is the movement of water across a semi-permeable membrane.
- Passive transport = no energy; follows concentration gradient.
- Active transport = requires energy (ATP); against gradient.
- Channel proteins allow passive flow (like ion channels).
- Carrier proteins bind molecules and change shape (facilitated diffusion).
- Endocytosis = taking in material (phagocytosis/pinocytosis).
- Exocytosis = releasing material from vesicles.
- Equilibrium = equal concentration, no net movement.

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