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

To solve this worksheet, we need to understand how osmosis works.

The Rules of Osmosis:
1. Water moves from High to Low: Water always tries to move from an area where there is a lot of water (high concentration) to an area where there is less water (low concentration). Think of it like water flowing downhill.
2. Solute and Water are opposites: If the solute percentage is high, the water percentage is low, and vice versa. They must always add up to 100%.
3. Solution Types:
* Hypertonic: The outside solution has *more* solute (and less water) than the cell. Water leaves the cell. ("Hyper" means over/high).
* Hypotonic: The outside solution has *less* solute (and more water) than the cell. Water enters the cell. ("Hypo" means under/low).
* Isotonic: The inside and outside are equal. Water moves in and out equally. ("Iso" means same).

Here is the step-by-step breakdown for each beaker:

Row 1

Beaker 1 (Top Left)
* Inside Cell: 90% Water, 10% Solute
* Outside Beaker: 85% Water, 15% Solute
* Missing Percentage: None needed (both add to 100%).
* Water Movement: Inside has 90% water, Outside has 85% water. Water moves from High (90%) to Low (85%). So, water moves OUT of the cell.
* Solution Type: The outside has more solute (15%) than the inside (10%). This is Hypertonic.

Beaker 2 (Top Middle)
* Inside Cell: 40% Water, 60% Solute
* Outside Beaker: 90% Water, 10% Solute
* Missing Percentage: None needed.
* Water Movement: Inside has 40% water, Outside has 90% water. Water moves from High (90%) to Low (40%). So, water moves IN to the cell.
* Solution Type: The outside has less solute (10%) than the inside (60%). This is Hypotonic.

Beaker 3 (Top Right)
* Inside Cell: 75% Water, 25% Solute
* Outside Beaker: 80% Water, 20% Solute
* Missing Percentage: None needed.
* Water Movement: Inside has 75% water, Outside has 80% water. Water moves from High (80%) to Low (75%). So, water moves IN to the cell.
* Solution Type: The outside has less solute (20%) than the inside (25%). This is Hypotonic.

Row 2

Beaker 4 (Middle Left)
* Inside Cell: 45% Water, 55% Solute
* Outside Beaker: 75% Water, 25% Solute
* Missing Percentage: None needed.
* Water Movement: Inside has 45% water, Outside has 75% water. Water moves from High (75%) to Low (45%). So, water moves IN to the cell.
* Solution Type: The outside has less solute (25%) than the inside (55%). This is Hypotonic.

Beaker 5 (Middle Center)
* Inside Cell: 90% Water, 10% Solute
* Outside Beaker: 63% Water, 37% Solute
* Missing Percentage: None needed.
* Water Movement: Inside has 90% water, Outside has 63% water. Water moves from High (90%) to Low (63%). So, water moves OUT of the cell.
* Solution Type: The outside has more solute (37%) than the inside (10%). This is Hypertonic.

Beaker 6 (Middle Right)
* Inside Cell: 50% Water, 50% Solute
* Outside Beaker: 50% Water, 50% Solute
* Missing Percentage: None needed.
* Water Movement: Both sides have 50% water. There is no difference. Water moves EQUALLY in both directions (no net change).
* Solution Type: The concentrations are the same. This is Isotonic.

Row 3

Beaker 7 (Bottom Left)
* Inside Cell: 90% Water, 10% Solute
* Outside Beaker: 90% Water, 10% Solute
* Missing Percentage: None needed.
* Water Movement: Both sides have 90% water. Water moves EQUALLY in both directions.
* Solution Type: The concentrations are the same. This is Isotonic.

Beaker 8 (Bottom Middle)
* Inside Cell: 82% Water, 18% Solute
* Outside Beaker: 25% Water, 75% Solute
* Missing Percentage: None needed.
* Water Movement: Inside has 82% water, Outside has 25% water. Water moves from High (82%) to Low (25%). So, water moves OUT of the cell.
* Solution Type: The outside has much more solute (75%) than the inside (18%). This is Hypertonic.

Beaker 9 (Bottom Right)
* Inside Cell: 90% Water, 10% Solute
* Outside Beaker: 80% Water, 20% Solute
* Missing Percentage: None needed.
* Water Movement: Inside has 90% water, Outside has 80% water. Water moves from High (90%) to Low (80%). So, water moves OUT of the cell.
* Solution Type: The outside has more solute (20%) than the inside (10%). This is Hypertonic.

Final Answer:

Row 1:
1. Left: Arrow points OUT. Solution: Hypertonic.
2. Middle: Arrow points IN. Solution: Hypotonic.
3. Right: Arrow points IN. Solution: Hypotonic.

Row 2:
4. Left: Arrow points IN. Solution: Hypotonic.
5. Middle: Arrow points OUT. Solution: Hypertonic.
6. Right: Arrows point BOTH WAYS (or no arrow). Solution: Isotonic.

Row 3:
7. Left: Arrows point BOTH WAYS (or no arrow). Solution: Isotonic.
8. Middle: Arrow points OUT. Solution: Hypertonic.
9. Right: Arrow points OUT. Solution: Hypertonic.