Cell Transport Review Worksheet featuring a table, matching exercises, and diagrams illustrating cellular transport processes.

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

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

✔ Explanation:

- Hypotonic solution: Lower solute concentration outside the cell → Water enters the cell → Cell swells.
- Isotonic solution: Equal solute concentration inside and outside → No net movement of water → Shape unchanged.
- Hypertonic solution: Higher solute concentration outside → Water leaves the cell → Cell shrinks (plasmolysis in plants, crenation in animals).
- Osmosis occurs in all three cases because it is the diffusion of water across a membrane. It just happens that the *net direction* differs.

So:
- "Causes a cell to swell" → Hypotonic
- "Doesn't change the shape" → Isotonic
- "Causes osmosis" → All three (osmosis always occurs when there’s a difference in water potential)
- "Causes a cell to shrink" → Hypertonic

✔ The table is already correctly filled as shown.

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Part 2: Match the term with its correct description

We are given:

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

Now match them to the descriptions:

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

2. Is used during active transport but not passive transport
→ Active transport requires energy → a

3. Process by which a cell takes in material by forming a vacuole around it
→ This is endocytosis → c

4. Particle movement from an area of higher concentration to an area of lower concentration
→ This is diffusion, which is part of passive transport → d

5. Process by which a cell expels wastes from a vacuole
→ This is exocytosis → f

6. A form of passive transport that uses transport proteins
→ This is facilitated diffusion → b

7. Particle movement from an area of lower concentration to an area of higher concentration
→ This is active transport → e

✔ So the answers are:

- H → h (channel protein)
- A → a (energy)
- C → c (endocytosis)
- D → d (passive transport)
- F → f (exocytosis)
- B → b (facilitated diffusion)
- E → e (active transport)

Wait — the worksheet has blanks labeled with letters like _H_, _A_, etc., so let’s recheck the order:

The worksheet says:

> ___ Transport protein that provides a tube-like opening... → H → h. channel protein
> ___ Is used during active transport but not passive transport → A → a. energy
> ___ Process by which a cell takes in material by forming a vacuole... → C → c. endocytosis
> ___ Particle movement from high to low concentration → D → d. passive transport
> ___ Process by which a cell expels wastes from a vacuole → F → f. exocytosis
> ___ A form of passive transport that uses transport proteins → B → b. facilitated diffusion
> ___ Particle movement from low to high concentration → E → e. active transport

✔ Correct matches:
- H → h
- A → a
- C → c
- D → d
- F → f
- B → b
- E → e

✔️ Done.

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Part 3: Match the term with its correct description (Second set)

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

Now match:

1. The diffusion of water through a cell membrane → e. osmosis

2. The movement of substances through the cell membrane without the use of cellular energy → d. passive transport

3. Used to help substances enter or exit the cell membrane → a. transport protein (carrier or channel proteins)

4. When energy is required to move materials through a cell membrane → b. active transport

5. When the molecules of one substance are spread evenly throughout another substance to become balanced → h. equilibrium

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

7. The cell membrane forms around another substance, for example, how the amoeba gets its food → f. endocytosis

8. When molecules move from areas of high concentration to areas of low concentration → c. diffusion

✔ Answers:
- E → e (osmosis)
- D → d (passive transport)
- A → a (transport protein)
- B → b (active transport)
- H → h (equilibrium)
- G → g (exocytosis)
- F → f (endocytosis)
- C → c (diffusion)

✔️ Matches are correct.

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Part 4: Label the diagrams of cells using: diffusion, active transport, osmosis, equilibrium

There are four diagrams:

#### Diagram 1:
- Arrow pointing into cell from "Low CO₂ levels" to "High CO₂ levels"
- But CO₂ is moving from low to high concentration? Wait — no:
- Outside: Low CO₂ → Inside: High CO₂
- Arrow points into the cell → From low to high → That means against gradient → Requires energy → Active transport

But wait — actually, CO₂ is a waste product, and it moves out of cells. However, here the diagram shows CO₂ entering the cell from low to high concentration? That doesn’t make sense unless it's being actively taken in (rare).

But looking at the arrow: From low CO₂ to high CO₂ inside → Moving into high concentration → Active transport

So label: ACTIVE

✔ Answer: ACTIVE

#### Diagram 2:
- Two water molecules going out of the cell
- Inside: 8 H₂O molecules → Outside: 2 H₂O molecules
- Water moves from high concentration (inside) to low concentration (outside) → Osmosis

So: OSMOSIS

✔ Answer: OSMOSIS

#### Diagram 3:
- 2 H₂O molecules going in and 2 H₂O molecules going out
- Net movement = zero → Equal on both sides → Equilibrium

✔ Answer: EQUILIBRIUM

#### Diagram 4:
- Protein moving from low protein levels → high protein levels (arrow into cell)
- Moving from low to high concentration → Against gradient → Requires energy → Active transport

✔ Answer: ACTIVE

So final labels:

1. ACTIVE
2. OSMOSIS
3. EQUILIBRIUM
4. ACTIVE

✔️ Correct.

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✔ Final Summary of Answers:

#### Table:
Already completed correctly.

#### First Matching Section:
- H → h (channel protein)
- A → a (energy)
- C → c (endocytosis)
- D → d (passive transport)
- F → f (exocytosis)
- B → b (facilitated diffusion)
- E → e (active transport)

#### Second Matching Section:
- E → e (osmosis)
- D → d (passive transport)
- A → a (transport protein)
- B → b (active transport)
- H → h (equilibrium)
- G → g (exocytosis)
- F → f (endocytosis)
- C → c (diffusion)

#### Diagram Labels:
1. ACTIVE
2. OSMOSIS
3. EQUILIBRIUM
4. ACTIVE

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All sections are solved correctly! Let me know if you'd like this formatted as a printable answer key.