Cell-enote

📘 STUDENT-FRIENDLY E-NOTE

Subject:Basic Science

Class: Grade 8 (JSS 2)

Topic: Cell

🔍 What is a Cell?

A cell is the smallest unit of life.

All living things (plants and animals) are made up of cells.

👉 Think of a cell like a building block—just like blocks make a house, cells make living organisms.

🧠 Types of Cells

There are two main types of cells:

1. Plant Cell 🌿

   Found in plants

   Has a cell wall (gives shape and support)

   Contains chloroplast (helps in making food)

2. Animal Cell 🐾

   * Found in animals

   * Does not have a cell wall

   * Does not contain chloroplast

🧩 Parts of a Cell and Their Functions

1. Cell Membrane

    Controls what enters and leaves the cell

2. Cytoplasm

   Jelly-like substance where activities happen

3. Nucleus

  Controls all activities of the cell (like the “brain” of the cell)

⚖️ Differences Between Plant and Animal Cells

| Feature | Plant Cell 🌿 | Animal Cell 🐾 |

| ----------- | --------------- | ----------------- |

| Cell Wall | Present | Absent |

| Chloroplast | Present | Absent |

| Shape | Usually regular | Usually irregular |

✏️ Class Activity

Draw and label a simple plant cell or animal cell.

📌 Key Points to Remember

* A cell is the basic unit of life

* All living things are made of cells

* The nucleus controls the cell

* Plant and animal cells are not exactly the same

📝 Quick Questions

1. What is a cell?

2. Name two parts of a cell.

3. Mention one difference between plant and animal cells.

🏠 Assignment

Draw and label both a plant cell and an animal cell neatly.

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