Let’s work through this step by step.
We are looking at two diagrams showing how particles move across a cell membrane. Both show movement from outside the cell (where there are more particles) to inside the cell (where there are fewer). That means both are types of
diffusion — movement from high concentration to low concentration, no energy needed.
Now, let’s look at the differences:
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Left diagram:
- Particles go straight through the cell membrane.
- No protein is helping them.
- This is called
simple diffusion.
So, above the left diagram, we write:
→
Simple diffusion
And the label pointing to the moving circles? Those are the
Diffusing particles
The membrane itself is already labeled “Cell membrane” — good.
---
Right diagram:
- There are TWO different ways particles are getting in:
1. Through a tunnel-like structure → that’s a
Channel protein
2. Through a shape-changing helper → that’s a
Carrier protein
- Both of these help particles cross the membrane without using energy → so this is
Facilitated diffusion
So, above the right diagram, we write:
→
Facilitated diffusion
Then, we need to label the parts:
- The tunnel-shaped thing →
Channel protein
- The shape-shifting thing →
Carrier protein
- The moving circles again →
Diffusing particles (same as before)
- Membrane and inside/outside are already labeled.
Also note: The word box has “Simple” and “Facilitated” — those go in the blanks above each diagram.
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Final labeling plan:
Left side:
- Blank above diagram:
Simple
- Label on moving circles:
Diffusing particles
Right side:
- Blank above diagram:
Facilitated
- Label on tunnel protein:
Channel protein
- Label on shape-shifting protein:
Carrier protein
- Label on moving circles:
Diffusing particles
All labels come from the word box provided.
No math or complex logic — just matching structures to their names based on how they work.
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Final Answer:
Left diagram blank: Simple
Right diagram blank: Facilitated
Labels for right diagram proteins: Channel protein (tunnel), Carrier protein (shape-changer)
Labels for moving particles in both diagrams: Diffusing particles
Parent Tip: Review the logic above to help your child master the concept of diffusion worksheet.
