Activity 1 follow up

Activity 1 Follow-Up: Add More Detail to Your Cell Diagrams

Now you can add details about cell walls to your diagrams for bacteria, plants, and fungi.

Cell Walls – Same but Different!

1. Plant Cell Wall

• Made of cellulose, pectin, and hemicellulose
• Has layers: middle lamella, primary cell wall, and plasma membrane
• Provides strength and helps the plant stand upright

2. Bacterial Cell Walls

• Two types:
  
• Gram-positive bacteria: thick peptidoglycan layer
• Gram-negative bacteria: thin peptidoglycan + outer membrane
• 
  
• Peptidoglycan is a strong, mesh-like sugar-protein structure

3. Fungal Cell Wall

• Made of chitin
• Strong and flexible
• Different from plant cell wall and bacterial cell wall

Chitin, Cellulose, Peptidoglycan: Similar But Different

• Cellulose: Found in plant cells
• Chitin: Found in fungi and insects
• Peptidoglycan: Found only in bacterial cell walls

All are made of sugar-based units, but their structures and functions are different.

This can help you improve your drawings by labeling what each cell wall is made of and how it’s structured. Let me know if you’d like a chart version too!