Let’s solve this step by step.
We are looking at three diagrams showing how particles move across a cell membrane. The word box gives us these terms to use:
- Channel protein
- Diffusing particles
- Simple
- Carrier protein
- Facilitated
We need to label each diagram with the correct type of diffusion and label the parts using the words from the box.
---
First Diagram (Left):
- Particles are moving directly through the cell membrane, no help needed.
- This is called
simple diffusion.
- The particles themselves are “diffusing particles”.
- The membrane is labeled already as “Cell membrane”, “Outside cell”, and “Inside cell”.
So for the left side:
→ Type of diffusion:
Simple
→ Label the circles:
Diffusing particles
---
Middle Diagram:
- Particles are going through a tunnel-like structure in the membrane.
- That tunnel is a
channel protein.
- Since it uses a protein to help, but doesn’t change shape, this is
facilitated diffusion.
- Again, the circles are “diffusing particles”.
So for the middle:
→ Type of diffusion:
Facilitated
→ Label the tunnel:
Channel protein
→ Label the circles:
Diffusing particles
---
Right Diagram:
- Particles are binding to a protein that changes shape to let them through.
- That’s a
carrier protein.
- Still facilitated diffusion — because it needs help from a protein.
- Circles = diffusing particles.
So for the right:
→ Type of diffusion:
Facilitated
→ Label the changing-shape protein:
Carrier protein
→ Label the circles:
Diffusing particles
---
Now, let’s fill in the blanks on the worksheet:
Top left blank:
Simple diffusion
Top right blank:
Facilitated diffusion
Under the middle diagram: label the protein →
Channel protein
Under the right diagram: label the protein →
Carrier protein
All the little circles in all diagrams →
Diffusing particles
---
Final Answer:
Left diagram:
Type of diffusion:
Simple
Label circles:
Diffusing particles
Middle diagram:
Type of diffusion:
Facilitated
Label protein:
Channel protein
Label circles:
Diffusing particles
Right diagram:
Type of diffusion:
Facilitated
Label protein:
Carrier protein
Label circles:
Diffusing particles
Parent Tip: Review the logic above to help your child master the concept of facilitated diffusion worksheet.
