Solved) - Osmosis Worksheet Below are animal cells placed in ... - Free Printable

Let's solve this Osmosis Worksheet step by step. The goal is to:

1. Draw an arrow showing the direction of water movement (by osmosis) between the cell and the surrounding solution.
2. Fill in any missing percentages (water or solute).
3. Identify the type of solution: isotonic, hypertonic, or hypotonic.

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🔬 Key Concepts:

- Osmosis: Water moves from an area of lower solute concentration to an area of higher solute concentration through a semi-permeable membrane.
- Tonicity:
- Hypotonic: External solution has lower solute concentration than the cell → Water enters the cell.
- Hypertonic: External solution has higher solute concentration than the cell → Water leaves the cell.
- Isotonic: Equal solute concentrations → No net movement of water.

We'll analyze each beaker one by one.

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## 🧪 Beaker 1
- Cell: 90% H₂O, 10% solute
- Solution: 85% H₂O, 15% solute

Step 1: Compare solute concentrations

- Cell: 10% solute
- Solution: 15% solute → Higher solute outside

→ Water moves out of the cell → Arrow points out

Step 2: Fill in missing percentages?

All are given.

Step 3: Tonicity

- Solution has more solute → Hypertonic

✔ Answer:
- Arrow: Out of cell
- Type: Hypertonic

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## 🧪 Beaker 2
- Cell: 40% H₂O, 60% solute
- Solution: 90% H₂O, 10% solute

Wait — that can’t be right. A cell with 60% solute? That’s extremely high. Let’s double-check.

But let's assume it's correct.

Step 1: Compare solutes

- Cell: 60% solute
- Solution: 10% solute → Lower solute outside

→ Water moves into the cell → Arrow points in

Step 2: Check percentages

- Cell: 40% H₂O + 60% solute = 100% ✔
- Solution: 90% H₂O + 10% solute = 100% ✔

All filled.

Step 3: Tonicity

- Solution has less solute → Hypotonic

✔ Answer:
- Arrow: Into cell
- Type: Hypotonic

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## 🧪 Beaker 3
- Cell: 75% H₂O, 25% solute
- Solution: 80% H₂O, 20% solute

Step 1: Compare solutes

- Cell: 25% solute
- Solution: 20% solute → Less solute outside

→ Water moves into the cell → Arrow points in

Step 2: Percentages

- Both total 100% ✔

Step 3: Tonicity

- Solution has lower solute → Hypotonic

✔ Answer:
- Arrow: Into cell
- Type: Hypotonic

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## 🧪 Beaker 4
- Cell: 45% H₂O, 55% solute
- Solution: 75% H₂O, 25% solute

Step 1: Compare solutes

- Cell: 55% solute
- Solution: 25% solute → Much lower outside

→ Water moves into the cell → Arrow points in

Step 2: Percentages

- Cell: 45+55=100% ✔
- Solution: 75+25=100% ✔

Step 3: Tonicity

- Solution has lower solute → Hypotonic

✔ Answer:
- Arrow: Into cell
- Type: Hypotonic

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## 🧪 Beaker 5
- Cell: 90% H₂O, 10% solute
- Solution: 63% H₂O, 37% solute

Step 1: Compare solutes

- Cell: 10% solute
- Solution: 37% solute → Higher outside

→ Water moves out of cell → Arrow points out

Step 2: Percentages

- Cell: 90+10=100% ✔
- Solution: 63+37=100% ✔

Step 3: Tonicity

- Higher solute outside → Hypertonic

✔ Answer:
- Arrow: Out of cell
- Type: Hypertonic

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## 🧪 Beaker 6
- Cell: 50% H₂O, 50% solute
- Solution: 50% H₂O, 50% solute

Step 1: Compare solutes

- Equal: 50% both → No net movement

→ No arrow (or bidirectional, but usually no arrow for isotonic)

Step 2: Percentages

- Both total 100% ✔

Step 3: Tonicity

- Equal → Isotonic

✔ Answer:
- Arrow: None (or equilibrium)
- Type: Isotonic

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## 🧪 Beaker 7
- Cell: 90% H₂O, 10% solute
- Solution: 90% H₂O, 10% solute

Step 1: Compare solutes

- Equal → No net movement

→ No arrow

Step 2: Percentages

- Both total 100% ✔

Step 3: Tonicity

- Equal → Isotonic

✔ Answer:
- Arrow: None
- Type: Isotonic

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## 🧪 Beaker 8
- Cell: 82% H₂O, 18% solute
- Solution: 25% H₂O, 75% solute

Wait! This looks odd.

- Solution: 25% H₂O, 75% solute → Very high solute!
- Cell: 82% H₂O, 18% solute → Much lower solute

Step 1: Compare solutes

- Cell: 18% solute
- Solution: 75% solute → Much higher outside

→ Water moves out of cell → Arrow points out

Step 2: Percentages

- Cell: 82+18=100% ✔
- Solution: 25+75=100% ✔

Step 3: Tonicity

- High solute outside → Hypertonic

✔ Answer:
- Arrow: Out of cell
- Type: Hypertonic

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## 🧪 Beaker 9
- Cell: 90% H₂O, 10% solute
- Solution: 80% H₂O, 20% solute

Step 1: Compare solutes

- Cell: 10% solute
- Solution: 20% solute → Higher outside

→ Water moves out of cell → Arrow points out

Step 2: Percentages

- Cell: 90+10=100% ✔
- Solution: 80+20=100% ✔

Step 3: Tonicity

- Higher solute outside → Hypertonic

✔ Answer:
- Arrow: Out of cell
- Type: Hypertonic

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## ✔ Final Summary Table:

| Beaker | Cell (H₂O/Solute) | Solution (H₂O/Solute) | Water Movement | Tonicity |
|--------|-------------------|------------------------|----------------|----------------|
| 1 | 90/10 | 85/15 | Out | Hypertonic |
| 2 | 40/60 | 90/10 | In | Hypotonic |
| 3 | 75/25 | 80/20 | In | Hypotonic |
| 4 | 45/55 | 75/25 | In | Hypotonic |
| 5 | 90/10 | 63/37 | Out | Hypertonic |
| 6 | 50/50 | 50/50 | None | Isotonic |
| 7 | 90/10 | 90/10 | None | Isotonic |
| 8 | 82/18 | 25/75 | Out | Hypertonic |
| 9 | 90/10 | 80/20 | Out | Hypertonic |

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📝 Instructions for Drawing:

For each beaker:
- Draw an arrow from the cell to outside if water moves out (hypertonic).
- Draw an arrow into the cell if water moves in (hypotonic).
- No arrow for isotonic.

> 💡 Remember: Water follows solute — it moves toward the higher solute concentration.

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