Let's solve this
Cell Biology worksheet step by step.
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🔬 Part 1: Label the Cell Parts in the Diagrams
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1. Animal Cell
Label the parts (1–5) based on the diagram:
-
1:
Nucleus – The large, dark circle in the center.
-
2:
Cytoplasm – The jelly-like substance filling the cell.
-
3:
Rough Endoplasmic Reticulum (RER) – The network of folded membranes with small dots (ribosomes).
-
4:
Mitochondria – The oval-shaped structures with inner folds (cristae).
-
5:
Cell surface membrane – The outer boundary of the cell.
✔ So:
- 1 → Nucleus
- 2 → Cytoplasm
- 3 → Rough Endoplasmic Reticulum (RER)
- 4 → Mitochondria
- 5 → Cell surface membrane
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####
2. Plant Cell
Label the parts (1–8):
-
1:
Nucleus – Large dark circle near one side.
-
2:
Mitochondria – Oval structures with internal folds.
-
3:
Chloroplast – Green oval structures (they are green in diagrams to show photosynthesis).
-
4:
Cell wall – The rigid outer layer surrounding the cell.
-
5:
Vacuole – The large central empty space.
-
6:
Chloroplast – Another chloroplast (same as #3; multiple present).
-
7:
Cytoplasm – The area around the vacuole and organelles.
-
8:
Rough Endoplasmic Reticulum (RER) – Network of membranes with ribosomes.
✔ So:
- 1 → Nucleus
- 2 → Mitochondria
- 3 → Chloroplast
- 4 → Cell wall
- 5 → Vacuole
- 6 → Chloroplast
- 7 → Cytoplasm
- 8 → Rough Endoplasmic Reticulum (RER)
> Note: Some labels repeat (e.g., chloroplasts), but each is numbered separately.
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🧪 Part 2: Functions of the Cell Parts
Now complete the table with the
function (job) of each structure.
| Cell Structure | Function (Job) |
|----------------|----------------|
|
Nucleus | Controls cell activities; contains DNA and directs protein synthesis |
|
Cytoplasm | Site of many metabolic reactions; supports organelles |
|
Cell surface membrane | Controls movement of substances in and out of the cell |
|
Rough Endoplasmic Reticulum (RER) | Produces proteins (has ribosomes attached) |
|
Mitochondria | Site of aerobic respiration; produces energy (ATP) |
|
Cell wall | Provides structural support and protection (only in plants) |
|
Chloroplast | Site of photosynthesis; converts light energy into chemical energy (only in plants) |
|
Vacuole | Stores water, ions, and waste; maintains turgor pressure (larger in plant cells) |
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✔ Shade in Green: Structures Only Found in Plant Cells
From the list above, these are
only found in plant cells:
-
Cell wall
-
Chloroplast
-
Large central vacuole (though vacuoles exist in animal cells too, they are much smaller and not permanent)
> So,
shade in green:
> - Cell wall
> - Chloroplast
> - Vacuole *(Note: While animal cells have vacuoles, they are small and temporary; the large permanent vacuole is a key plant feature)*
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📌 Final Summary
#### 🔤 Labels for Animal Cell:
1. Nucleus
2. Cytoplasm
3. Rough Endoplasmic Reticulum (RER)
4. Mitochondria
5. Cell surface membrane
#### 🔤 Labels for Plant Cell:
1. Nucleus
2. Mitochondria
3. Chloroplast
4. Cell wall
5. Vacuole
6. Chloroplast
7. Cytoplasm
8. Rough Endoplasmic Reticulum (RER)
#### 📘 Table Completed:
| Cell Structure | Function |
|----------------|---------|
| Nucleus | Controls cell activities; stores DNA |
| Cytoplasm | Site of metabolic reactions |
| Cell surface membrane | Regulates entry/exit of substances |
| RER | Protein synthesis |
| Mitochondria | Energy production (ATP via respiration) |
| Cell wall | Structural support and protection |
| Chloroplast | Photosynthesis |
| Vacuole | Storage, osmotic balance, turgor pressure |
>
✔ Shade in green:
Cell wall,
Chloroplast, and
Vacuole (as they are primarily or uniquely prominent in plant cells).
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Let me know if you'd like this turned into a printable labeled version!
Parent Tip: Review the logic above to help your child master the concept of cell structure worksheet middle school.
