Animal Cell Worksheet -Worksheets Library - Free Printable

To solve this problem, we need to identify the parts of the animal cell shown in the diagram. Let's go through each number step-by-step by looking at the shape and location of the organelle.

Step 1: Identify the outer boundary
* Number 6 points to the very outside edge of the cell. In an animal cell, this is the Cell Membrane. It controls what goes in and out.

Step 2: Identify the large central structure
* Number 3 points to the large, round circle in the middle. This is the control center of the cell, called the Nucleus.
* Number 2 points specifically to the smaller, dark circle inside the nucleus. This is the Nucleolus, where ribosomes are made.
* Number 4 points to the material filling the nucleus (surrounding the nucleolus). This is the Chromatin (or DNA/genetic material).

Step 3: Identify the energy producers
* Number 11 points to the bean-shaped structures with wavy lines inside them. These are found throughout the cell. They are the Mitochondria, which provide energy for the cell.

Step 4: Identify the transport and packaging systems
* Number 5 points to the folded maze-like structure right next to the nucleus. This is the Endoplasmic Reticulum (specifically Rough ER because it looks bumpy).
* Number 1 points to the stack of flattened sacs that looks like a stack of pancakes, located away from the nucleus. This is the Golgi Apparatus (or Golgi Body), which packages proteins.

Step 5: Identify the digestive and storage units
* Number 8 points to small, simple circles floating in the cytoplasm. These are likely Vacuoles (small ones in animal cells) or vesicles used for storage.
* Number 7 points to a slightly larger sac containing some dots. In many diagrams, this represents a Lysosome, which contains enzymes to digest waste.

Step 6: Identify the structural supports
* Number 9 points to the thin lines running through the jelly-like substance. These are part of the Cytoskeleton (microfilaments/microtubules) that give the cell shape.
* Number 10 points to two small cylinder shapes near each other. These are Centrioles, which help the cell divide.

Step 7: Identify the filler
* Number 7 is pointing to the space/fluid itself in some interpretations, but usually, the line points to an organelle. Looking closely at #7, it points to a distinct sac. However, looking at the general space between organelles (often labeled in these diagrams), if there was a label for the jelly-like fluid, it would be Cytoplasm. Let's re-evaluate #7 and #8.
* Usually, the small empty circles are Vacuoles (#8).
* The sac with "digestive" looking contents is often a Lysosome (#7).
* Wait, let's look at standard labeling for this specific worksheet style.
* 1: Golgi Apparatus
* 2: Nucleolus
* 3: Nucleus
* 4: Chromatin / Nuclear Envelope (usually points to the inside matter) -> Let's stick with Chromatin or DNA.
* 5: Endoplasmic Reticulum (Rough)
* 6: Cell Membrane
* 7: Lysosome (or sometimes Vacuole depending on the key, but Lysosome is distinct from the empty vacuole at 8)
* 8: Vacuole
* 9: Cytoskeleton (Microtubules/Microfilaments)
* 10: Centrioles
* 11: Mitochondria

Let's double-check #4. It points to the interior of the nucleus. "Chromatin" is the best scientific term, but sometimes schools just accept "DNA".
Let's double-check #7 vs #8. #8 is clearly a small vacuole. #7 is a larger vesicle, typically a Lysosome in animal cell diagrams.

Here is the final list based on standard animal cell anatomy:

1. Golgi Apparatus
2. Nucleolus
3. Nucleus
4. Chromatin (or DNA)
5. Endoplasmic Reticulum (Rough ER)
6. Cell Membrane
7. Lysosome
8. Vacuole
9. Cytoskeleton
10. Centrioles
11. Mitochondria

Final Answer:
1. Golgi Apparatus
2. Nucleolus
3. Nucleus
4. Chromatin
5. Endoplasmic Reticulum
6. Cell Membrane
7. Lysosome
8. Vacuole
9. Cytoskeleton
10. Centrioles
11. Mitochondria