Quiz: Cells organelles worksheet - Free Printable

Let's solve this quiz step by step and explain each answer.

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1. Match the description with a term.

Given terms:
- Cell membrane
- Cytoplasm
- Ribosomes
- Golgi body
- Mitochondria
- Nucleus

Now, match each description:

a. Organelle that releases energy for the cell. The power house of the cell.
✔ Mitochondria
→ Mitochondria produce ATP (energy) through cellular respiration. They are known as the "powerhouse" of the cell.

b. Structure that forms a boundary of cell. Allows things to enter or leave the cell.
✔ Cell membrane
→ The cell membrane controls what enters and exits the cell and maintains homeostasis.

c. Gel-like material inside the cell membrane.
✔ Cytoplasm
→ The cytoplasm is the jelly-like substance where organelles are suspended.

d. Where proteins are made.
✔ Ribosomes
→ Ribosomes are responsible for protein synthesis.

e. A folded membrane that moves material in cells. The UPS of a cell.
✔ Golgi body
→ The Golgi apparatus modifies, sorts, and packages proteins and lipids for transport. It’s often compared to the "postal system" or "shipping department" of the cell.

f. Structure that directs the cell’s activities.
✔ Nucleus
→ The nucleus contains DNA and controls cellular activities like growth, metabolism, and reproduction.

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2. Complete the statement with an option.

a. The structures within the cytoplasm of eukaryotic cells are _________.
✔ a. Organelles
→ Eukaryotic cells have membrane-bound organelles in their cytoplasm.

b. Cell wastes are digested in organelles called _________.
✔ b. lysosomes
→ Lysosomes contain digestive enzymes that break down waste materials and cellular debris.

c. Water, food, and waste products are stored in the cell’s _________.
✔ a. vacuoles
→ Vacuoles store water, nutrients, and waste. In plant cells, the central vacuole is large and helps maintain turgor pressure.

d. Plant cells differ from animal cells because plant cells have _________.
✔ c. cell walls
→ Plant cells have a rigid cell wall made of cellulose, which animal cells lack.

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3. Complete the next image with the labeled parts.

We are given a diagram of a typical eukaryotic cell, likely an animal cell (since it has a centrosome but no cell wall or chloroplast). We need to label the empty boxes based on the visible structures.

Let’s identify each unlabeled part:

1. Top box (pointing to a long oval structure):
→ This is a mitochondrion (plural: mitochondria).
✔ Mitochondria

2. Right side box (pointing to a stack of flattened sacs):
→ This is the Golgi body (also called Golgi apparatus), already labeled nearby. But since it's pointing to the same structure, confirm:
✔ Golgi body — already labeled, so possibly just confirming.

Wait — actually, the top right box points to the centrosome, which is already labeled. So maybe the blank boxes are elsewhere.

Let’s go carefully:

Looking at the image:

- Top box (above the cell): Points to mitochondrion → ✔ Mitochondria
- Right side box (next to rough ER): Already labeled as rough endoplasmic reticulum → not blank
- Middle left box (pointing to nucleus): The nucleus is labeled, but the nucleus itself is not directly labeled in the box. Wait — one box points to the nucleus (the large pink structure).
- The nucleolus is inside the nucleus — already labeled.
- So the box pointing to the entire nucleus should be: ✔ Nucleus
- Box below nucleus (pointing to small purple dots): These are ribosomes — already labeled.
- Bottom box (pointing to brown oval structure): That’s another mitochondrion → but we already labeled one.

Wait — let’s list the empty boxes:

From the diagram:

1. Top box → points to mitochondrion → ✔ Mitochondria
2. Middle left box → points to nucleus → ✔ Nucleus
3. Lower left box → points to vacuole → ✔ Vacuole
4. Bottom box → points to mitochondrion again → ✔ Mitochondria (or perhaps just repeat)
5. Right side box → points to centrosome → already labeled

But wait — there are five orange boxes. Let’s map them:

- Top box: points to a mitochondrion → ✔ Mitochondria
- Right box: points to centrosome → already labeled, so perhaps it's Centrosome
- Middle left box: points to nucleus → ✔ Nucleus
- Lower left box: points to vacuole → ✔ Vacuole
- Bottom box: points to mitochondrion → ✔ Mitochondria

Wait — some labels might be missing.

Actually, looking closely:

- One box points to lysosome → already labeled
- One points to vacuole → already labeled
- One points to nucleolus → already labeled
- One points to ribosomes → already labeled
- One points to Golgi body → already labeled

But the orange boxes are blank, so they must point to:

Let’s re-express:

From the image:

1. Top box → points to mitochondrion → ✔ Mitochondria
2. Right box → points to centrosome → ✔ Centrosome
3. Middle left box → points to nucleus → ✔ Nucleus
4. Lower left box → points to vacuole → ✔ Vacuole
5. Bottom box → points to mitochondrion → ✔ Mitochondria

But wait — two mitochondria? Yes, multiple mitochondria exist.

Alternatively, perhaps the bottom box points to cytoplasm?

Wait — the cytoplasm is the area surrounding organelles, but not labeled.

But the boxes are pointing to specific structures.

Let’s clarify:

Looking at the diagram:

- The top box points to a mitochondrion → ✔ Mitochondria
- The right box points to centrosome → ✔ Centrosome
- The middle left box points to the nucleus → ✔ Nucleus
- The lower left box points to vacuole → ✔ Vacuole
- The bottom box points to mitochondrion → ✔ Mitochondria

But the bottom box might be pointing to cytoplasm? No — it's pointing to a mitochondrion.

Alternatively, could one box point to smooth endoplasmic reticulum?

Wait — the smooth ER is labeled. The rough ER is labeled.

So all major structures are labeled except:

- Mitochondria – yes, several present
- Nucleus – yes
- Vacuole – yes
- Centrosome – yes
- Lysosome – yes
- Ribosomes – yes
- Golgi body – yes
- Rough and smooth ER – yes

So the orange boxes must be labeling:

1. Top box → Mitochondria
2. Right box → Centrosome
3. Middle left box → Nucleus
4. Lower left box → Vacuole
5. Bottom box → Mitochondria (again)

But perhaps the bottom one is cytoplasm?

Wait — no, the cytoplasm is the gel-like material, but the box is pointing to a structure, not the background.

Looking again:

The bottom box points to a mitochondrion — same as top one.

So likely:

- Top box: Mitochondria
- Right box: Centrosome
- Middle left box: Nucleus
- Lower left box: Vacuole
- Bottom box: Mitochondria

But to avoid repetition, perhaps one box is cytoplasm?

Wait — if the box is pointing to the area between organelles, then it would be cytoplasm.

But in the image, the boxes seem to point to organelles.

Wait — let’s check the positions:

From the image:

- Top box: points to mitochondrion → ✔ Mitochondria
- Right box: points to centrosome → ✔ Centrosome
- Middle left box: points to nucleus → ✔ Nucleus
- Lower left box: points to vacuole → ✔ Vacuole
- Bottom box: points to mitochondrion → ✔ Mitochondria

So all five boxes are filled with:

1. Mitochondria
2. Centrosome
3. Nucleus
4. Vacuole
5. Mitochondria

Yes, that makes sense — multiple mitochondria.

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✔ Final Answers:

#### 1. Match the description:

a. Mitochondria
b. Cell membrane
c. Cytoplasm
d. Ribosomes
e. Golgi body
f. Nucleus

#### 2. Fill in the blanks:

a. Organelles
b. lysosomes
c. vacuoles
d. cell walls

#### 3. Label the diagram:

- Top box: Mitochondria
- Right box: Centrosome
- Middle left box: Nucleus
- Lower left box: Vacuole
- Bottom box: Mitochondria

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📌 Summary:

This quiz tests understanding of cell organelles and their functions. Key takeaways:

- Mitochondria = energy production
- Nucleus = control center
- Ribosomes = protein synthesis
- Golgi body = packaging and shipping
- Lysosomes = digestion
- Vacuoles = storage
- Cell membrane = selective barrier
- Cytoplasm = fluid environment
- Plant vs. animal cells: plant cells have cell walls

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