Cell Structure and Function Vocabulary Review worksheet featuring definitions, matching terms, and diagrams of cell structures including a prokaryotic cell, eukaryotic cell, and a Venn diagram comparing plant and animal cells.

Let's solve this Cell Structure and Function Vocabulary Review worksheet step by step.

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Step 1: Match each definition to the correct term (A–O)

We’ll go through each numbered definition and match it with the correct letter from the list on the right.

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1. A thick fluid composed of mainly water that fills the cell and is enclosed by the cell membrane.
→ This is the cytoplasm.
✔ O. Cytoplasm

2. Modifies and packages molecules into a vesicle that are transported around the cell or secreted outside of the cell.
→ This describes the Golgi apparatus (Golgi bodies).
✔ D. Golgi bodies

3. Cells that contain a nucleus and organelles and are enclosed by a cell membrane.
→ These are eukaryotic cells.
✔ I. Eukaryotic cell

4. Protein builders that can be free-floating or attached to the endoplasmic reticulum.
→ These are ribosomes.
✔ H. Ribosome

5. A specialized vesicle that contains digestive enzymes to break down cell waste.
→ This is a lysosome.
✔ N. Lysosome

6. The site of photosynthesis which allows plants to change sunlight into chemical energy.
→ This is the chloroplast.
✔ F. Chloroplast

7. Free-floating organelles that take in nutrients, break them down, and create energy-rich molecules for the cell.
→ These are mitochondria.
✔ E. Mitochondria

8. An organelle important for synthesizing and storing lipids and steroids.
→ This is the smooth ER.
✔ C. Smooth ER

9. Studded with ribosomes, this organelle is involved in protein production, protein folding, and export to other parts of the cell.
→ This is the rough ER.
✔ I. Rough ER

Wait — I is already used for "Eukaryotic cell". That’s a mistake.

Looking at the list:
- I = Rough ER
- J = Eukaryotic cell

So correction:

✔ I. Rough ER

And J. Eukaryotic cell for #3.

Let me fix that.

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Revised:

3. Eukaryotic cell → ✔ J. Eukaryotic cell

9. Rough ER → ✔ I. Rough ER

(No conflict now.)

10. Called the control center because it contains the instructions for determining and controlling what a cell looks like and what it does.
→ This is the nucleus.
✔ A. Nucleus

11. Made of protein strands called microtubules and aids in cell division.
→ This is the centrioles.
✔ K. Centrioles

12. A protective layer outside the cell membrane that provides shape and support to plant cells.
→ This is the cell wall.
✔ M. Cell wall

13. Membrane-bound compartments that store water, salts, proteins, and other materials needed by the cell.
→ These are vacuoles.
✔ L. Vacuoles

14. A primitive cell type that lacks a nucleus and membrane-bound organelles.
→ This is a prokaryotic cell.
✔ G. Prokaryotic cell

15. A phospholipid bilayer that provides protection and support, as well as controls what goes in and out of the cell.
→ This is the cell membrane.
✔ B. Cell membrane

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✔ Final Matching Answers:

| Number | Definition | Letter |
|-------|-----------|--------|
| 1 | Cytoplasm | O |
| 2 | Golgi bodies | D |
| 3 | Eukaryotic cell | J |
| 4 | Ribosome | H |
| 5 | Lysosome | N |
| 6 | Chloroplast | F |
| 7 | Mitochondria | E |
| 8 | Smooth ER | C |
| 9 | Rough ER | I |
| 10 | Nucleus | A |
| 11 | Centrioles | K |
| 12 | Cell wall | M |
| 13 | Vacuoles | L |
| 14 | Prokaryotic cell | G |
| 15 | Cell membrane | B |

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Step 2: Label the Diagrams

Now let’s follow the instructions for labeling the diagrams.

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#### Figure 1:
This is a simple diagram of a bacteria-like cell (no nucleus, no membrane-bound organelles).
It matches Prokaryotic cell → G

✔ So, label Figure 1: G. Prokaryotic cell

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#### Figure 2:
This shows a more complex cell with a nucleus, mitochondria, chloroplasts, etc.
It has a cell wall, chloroplast, and large central vacuole → typical of a plant cell.
But since it has a nucleus and membrane-bound organelles, it’s a eukaryotic cell.

✔ Label Figure 2: J. Eukaryotic cell

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#### Figure 3:
This is an analogy of a cell using a school.

Let’s match the parts:

- School entrance → Controls what enters/leaves → Cell membrane → B
- Teachers & staff → Direct operations, control center → Nucleus → A
- Principal office/Main office → Control center → Nucleus → A
- Cabinets → Store materials → Vacuoles → L
- Air that fills the hallways → Fluid inside → Cytoplasm → O

So fill in the boxes:

- School entrance → B
- Teachers & staff → A
- Principal office → A
- Cabinets → L
- Air that fills the hallways → O

> Note: “Teachers & staff” and “Principal office” both represent the nucleus, so both get A.

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#### Figure 4: Venn Diagram – Plant vs. Animal Cells

We need to place letters in the correct sections.

Shared (both plant and animal):
- Cell membrane (B)
- Cytoplasm (O)
- Nucleus (A)
- Mitochondria (E)
- Ribosomes (H)
- Endoplasmic Reticulum (Smooth ER: C; Rough ER: I)
- Golgi bodies (D)
- Lysosomes (N) — though sometimes not emphasized in plant cells, but they do have them.
- Centrioles (K) — only in animal cells (usually), so not shared
- Vacuoles (L) — both have them, but large central vacuole is plant-specific
- Chloroplasts (F) — only in plants
- Cell wall (M) — only in plants

So:

✔ Both (Overlap):
- A (Nucleus)
- B (Cell membrane)
- C (Smooth ER)
- D (Golgi bodies)
- E (Mitochondria)
- H (Ribosome)
- I (Rough ER)
- L (Vacuoles) — both have vacuoles, though plant cells have large central ones
- N (Lysosome) — both have lysosomes

> Note: Some sources say lysosomes are more common in animals, but plants also have them.

✔ Plant Only:
- F (Chloroplast)
- M (Cell wall)

✔ Animal Only:
- K (Centrioles) — found in animal cells, not in most plant cells

> Note: Centrioles are absent in most plant cells.

So final Venn diagram:

- Plant Only: F, M
- Animal Only: K
- Both: A, B, C, D, E, H, I, L, N, O

Wait — O (Cytoplasm) is missing from above list. Let's add it.

✔ Add O (Cytoplasm) to Both

Also, L (Vacuoles) — yes, both have vacuoles.

So full list:

Both: A, B, C, D, E, H, I, L, N, O

Plant Only: F, M

Animal Only: K

> Note: The question says “Place the letter in the correct location on the Venn diagram for figure 4.”

So write:

- Plant Only: F, M
- Animal Only: K
- Both: A, B, C, D, E, H, I, L, N, O

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✔ Final Answer Summary

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Matching Section:

| # | Answer |
|---|--------|
| 1 | O |
| 2 | D |
| 3 | J |
| 4 | H |
| 5 | N |
| 6 | F |
| 7 | E |
| 8 | C |
| 9 | I |
| 10 | A |
| 11 | K |
| 12 | M |
| 13 | L |
| 14 | G |
| 15 | B |

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Labeling Figures:

#### Figure 1:
Label: G. Prokaryotic cell

#### Figure 2:
Label: J. Eukaryotic cell

#### Figure 3: Analogy
- School entrance → B
- Teachers & staff → A
- Principal office → A
- Cabinets → L
- Air that fills the hallways → O

#### Figure 4: Venn Diagram
- Plant Only: F, M
- Animal Only: K
- Both: A, B, C, D, E, H, I, L, N, O

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🟩 Final Notes:

- Make sure all letters are placed correctly in shaded boxes or Venn diagram.
- For Figure 3, use the analogy to understand:
- Entrance = cell membrane
- Office = nucleus
- Cabinets = vacuoles
- Air = cytoplasm

This completes the worksheet!

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