57
Lesson 57 of 84 · Evolution
ExperimentAdaptations Over Generations (Part 3)
What You'll Learn
Cells are the basic units of life. All living things are made of one or more cells. Plant cells have cell walls and chloroplasts that animal cells lack.
Key Words
- allele
- cell
- nucleus
Materials Needed
- onion skin
- iodine stain
- paper
Safety First
- Do not taste any materials.
- Wear safety goggles when mixing liquids.
- Wash hands after handling materials.
Steps
Step 1 — Read
Read and learn: Cells are the basic units of life. All living things are made of one or more cells. Plant cells have cell walls and chloroplasts that animal cells lack.
Step 2 — Do
Build your model using the materials provided.
Step 3 — Observe
Draw a picture of what you observe.
Step 4 — Record
Answer the questions based on your data.
Check Your Understanding
Question 1
1 of 3What is the basic unit of life?