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

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

---

Part 1: Match the definition on the left with the term on the right.

We are given definitions and a list of terms (a–g). Let’s match them correctly:

1. Large wastes or cell products are released from inside to outside a cell
→ This is exocytosis, where vesicles fuse with the membrane to release contents.
✔ Answer: d. Exocytosis

2. Diffusion of water molecules through a selectively permeable membrane
→ This is specifically called osmosis.
✔ Answer: e. Osmosis

3. The transport of particles which requires the use of energy
→ This is active transport, as it uses ATP.
✔ Answer: f. Active transport

4. A state reached when particles continue to move but in equal amounts in and out of the cell
→ This describes dynamic equilibrium, where net movement is zero, but molecules still move.
✔ Answer: c. Dynamic equilibrium

5. Large particles are surrounded by the membrane and taken into the cell
→ This is endocytosis, such as phagocytosis or pinocytosis.
✔ Answer: g. Endocytosis

6. Movement of any particles from an area of higher concentration to one of lower concentration, with the concentration gradient
→ This is the general definition of diffusion.
✔ Answer: b. Diffusion

7. The transport of particles which does not require energy
→ This is passive transport, including diffusion, osmosis, and facilitated diffusion.
✔ Answer: a. Passive transport

---

✔ Matching Answers:

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

---

Part 2: Circle the word or phrase that best completes the statement.

8. The structure most responsible for maintaining cell homeostasis is the
- cytoplasm
- cell wall
- mitochondria
- plasma membrane ✔
> The plasma membrane regulates what enters and exits the cell, maintaining internal balance.

9. The plasma membrane (cell membrane) is made up of a(n)
- cholesterol layer
- enzyme layer
- phospholipid bilayer ✔
- protein layer
> The main structural component is the phospholipid bilayer, with proteins embedded.

10. Which of the following is NOT a form of passive transport?
- facilitated diffusion
- diffusion
- endocytosis ✔
- osmosis
> Endocytosis requires energy (ATP), so it's active transport.

11. Diffusion continues until
- equilibrium is reached ✔
- turgor pressure is reached
- one side has more
> Molecules move until concentrations are equal (equilibrium).

12. If a cell is placed in salt water, water leaves the cell by
- osmosis ✔
- diffusion
- active transport
- phagocytosis
> Water moves across a membrane due to concentration differences — this is osmosis.

13. A cell moves particles from a region of low concentration to a region of high concentration by
- facilitated diffusion
- osmosis
- passive transport
- active transport ✔
> Moving against the gradient requires energy → active transport.

---

✔ Part 2 Answers:

8. plasma membrane
9. phospholipid bilayer
10. endocytosis
11. equilibrium is reached
12. osmosis
13. active transport

---

Part 3: Scenario – Easter Egg Coloring

Scenario: A blue food coloring tablet is placed in vinegar and water. It dissolves and spreads evenly.

#### a. The blue dye is traveling from a ________ to a ________ concentration.
→ Initially, the dye is concentrated in the tablet (high concentration), then spreads into the solution (low concentration).
So, it moves from high to low concentration.

✔ Answer:
a. The blue dye is traveling from a high to a low concentration.

#### b. Identify the type of transport illustrated in this scenario:
→ Movement from high to low concentration without energy → passive transport.
More specifically, since it's a dissolved substance spreading, it's diffusion.

✔ Answer: Diffusion (or passive transport)

#### c. Does this movement of particles require energy?
→ No, because it's moving down the concentration gradient.

✔ Answer: No

---

✔ Arrow Drawing (as requested):

In the diagram:
- Draw an arrow from the blue food color tablet pointing outward toward the water and vinegar.
- This shows the dye molecules spreading from the tablet into the surrounding liquid.

> You can draw it like this:
```
[Blue food color tablet] → [Water and vinegar]
```
(An arrow pointing from the tablet into the liquid)

---

✔ Final Answers Summary:

#### Matching:
1. d
2. e
3. f
4. c
5. g
6. b
7. a

#### Multiple Choice:
8. plasma membrane
9. phospholipid bilayer
10. endocytosis
11. equilibrium is reached
12. osmosis
13. active transport

#### Easter Egg Coloring:
a. high → low
b. Diffusion
c. No

---

This review covers key concepts in cell transport, including passive vs. active transport, osmosis, endo/exocytosis, and real-life examples like diffusion in solutions. Let me know if you'd like a visual diagram explanation!