Diagram showing the process of cell transport, highlighting active and passive mechanisms, membrane structure, and diffusion of molecules.

Let's solve the diagram step by step and fill in the missing boxes based on the concepts of cell transport. This flowchart outlines the mechanisms by which substances move across cell membranes.

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🔍 Step-by-step Analysis:

#### 1. "Cell Transport" is regulated by...
- Cell transport is regulated by the cell membrane (also known as the plasma membrane).
- The membrane controls what enters and exits the cell.
✔ So, the first blank: Plasma Membrane

#### 2. "Plasma Membrane" is made of...
- The plasma membrane is made of a phospholipid bilayer and proteins.
- The diagram already shows "proteins" as one component.
✔ So, the second blank (connected to "made of"): Phospholipids (or phospholipid bilayer)

> Note: The diagram shows a lipid bilayer with proteins embedded — this is the fluid mosaic model.

---

#### 3. Cell Transport includes: Active and Passive
- These are the two main types of transport.
✔ So, the box branching from "Cell Transport" should be: Active and Passive

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#### 4. Active Transport
- Requires energy (ATP)
- Includes:
- Endocytosis (bringing materials into the cell via vesicles)
- Exocytosis (expelling materials out via vesicles)
- Also includes primary active transport (like Na⁺/K⁺ pump), but since the diagram shows images, let’s analyze them.

> Looking at the images:
- Left image: A molecule being pumped *against* its concentration gradient using energy → Active transport, likely pumping.
- Right image: Vesicles fusing with membrane → Exocytosis (and possibly endocytosis).

So, the two subtypes under active include:
- Primary active transport (direct ATP use) or simply active pumping
- Endocytosis / Exocytosis

But the diagram shows two boxes under "active". Based on common classification:
✔ Fill in:
- Endocytosis
- Exocytosis

> (Alternatively, if it's focusing on molecular pumps, it might be pumping and vesicular transport, but given the visuals, endocytosis and exocytosis are more accurate.)

And above that, requires → Energy (ATP)

✔ So:
- Box next to "requires": Energy (ATP)

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#### 5. Passive Transport
- Does not require energy
- Includes:
- Diffusion
- Osmosis
- Facilitated diffusion

The diagram says:
- "Involves water" → that’s osmosis
- Then shows a diagram of water moving from high to low solute concentration → Osmosis

So:
✔ First box under "passive": Osmosis
✔ Second box: Diffusion (since it's a general term for passive movement)

But wait — there’s also a branch going to proteins, which suggests facilitated diffusion.

Let’s look carefully.

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#### 6. Proteins involved in transport
- The diagram shows proteins in the membrane.
- It branches to:
- "where molecules move from high concentration to..." → low concentration
- "until" → equilibrium

This describes diffusion and facilitated diffusion.

So, the box after "proteins" should be: Facilitated diffusion

✔ Fill in:
- Facilitated diffusion

And then:
- Molecules move from high concentration to low concentration
- Until equilibrium is reached

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#### 7. Summary of all blanks:

Let’s go through each empty box:

1. Regulated by: → Plasma membrane
2. Made of: → Phospholipids (or phospholipid bilayer)
3. Which includes: → Active and Passive
4. Active requires: → Energy (ATP)
5. Active includes: → Endocytosis and Exocytosis
6. Passive includes: → Osmosis and Facilitated diffusion (but note: diffusion is broader; osmosis is a type of diffusion)
- But the diagram has two boxes under passive: one leads to water → osmosis
- The other goes to proteins → facilitated diffusion
7. Water → Osmosis
8. High concentration → low concentration
9. Until → equilibrium

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✔ Final Filled Diagram:

```
Cell Transport
↓ regulated by
Plasma Membrane
↓ made of
[Phospholipids] ────→ [Proteins]
↑ ↑
| |
| |
└─────which includes─────┐
↓ ↓
[Active] [Passive]
↓ ↓
[requires Energy (ATP)] [includes]
↓ ↓
[Endocytosis] [Osmosis]
↓ ↓
[Exocytosis] [Facilitated diffusion]
↑
|
involves
↓
water
↓
[Osmosis]
↓
[high concentration]
↓
to [low concentration]
↓
until [equilibrium]
```

Wait — actually, the diagram layout is slightly different.

Let me re-draw it logically based on the original structure:

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🧩 Corrected Flowchart (with filled-in boxes):

```
Cell Transport
↓ regulated by
[Plasma Membrane]
↓ made of
[Phospholipids] ←─┬─→ [Proteins]
│
└─→ which includes
↓
[Active] [Passive]
↓ ↓
[requires] [includes]
↓ ↓
[Energy (ATP)] [Osmosis]
↓ ↓
[Endocytosis] [Exocytosis] [Facilitated diffusion]
↑
|
involves
↓
water
↓
[Osmosis]
↓
high concentration
↓
to [low concentration]
↓
until [equilibrium]
```

Wait — we have duplication of "osmosis".

Actually, the "involves water" box points to osmosis, so:

- Under Passive: two types: Osmosis and Facilitated diffusion
- Osmosis involves water
- Facilitated diffusion uses proteins

So final correct labels:

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✔ Completed Answer:

Fill in the blanks in order (left to right, top to bottom):

1. Plasma Membrane
2. Phospholipids
3. Active
4. Passive
5. Energy (ATP)
6. Endocytosis
7. Exocytosis
8. Osmosis
9. Facilitated diffusion
10. Low concentration
11. Equilibrium

---

🔎 Explanation:

- Cell transport is controlled by the plasma membrane, which is made of a phospholipid bilayer and proteins.
- Transport is divided into active (needs energy) and passive (no energy).
- Active transport includes endocytosis (taking in materials) and exocytosis (expelling materials), both requiring ATP.
- Passive transport includes:
- Osmosis: movement of water from high to low solute concentration.
- Facilitated diffusion: movement of molecules through proteins (e.g., glucose), down their concentration gradient.
- All passive processes move molecules from high to low concentration until equilibrium is reached.

---

✔ Final Answer:

| Blank Number | Answer |
|--------------|-------------------------|
| 1 | Plasma Membrane |
| 2 | Phospholipids |
| 3 | Active |
| 4 | Passive |
| 5 | Energy (ATP) |
| 6 | Endocytosis |
| 7 | Exocytosis |
| 8 | Osmosis |
| 9 | Facilitated diffusion |
| 10 | Low concentration |
| 11 | Equilibrium |

Let me know if you'd like a visual version!