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Lesson 20 of 84 · Cells
ExperimentCells: The Building Blocks of Life (Part 2)
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
- cell
- nucleus
- DNA
Materials Needed
- markers
- ruler
- scissors
- microscope (or magnifying glass)
- slides
Safety First
- Use materials only as directed in the experiment.
- Keep small objects away from young children.
- Work in a well-ventilated area when using vinegar or other strong-smelling substances.
Steps
Step 1 — Read
Read about Cells and write down three key facts.
Step 2 — Do
Prepare a wet-mount slide of an onion skin and observe it under a microscope (or magnifying glass). Draw and label the cell wall, cell membrane, and nucleus.
Step 3 — Observe
Observe what happens and describe it in detail.
Step 4 — Record
Record your observations in your science journal with measurements and descriptions.
Check Your Understanding
Question 1
1 of 3What is the basic unit of life?