GR 10 Review for Grade 10 Biology Culminating Task (Science Video ... - Free Printable

Explanation:
Let’s look at the cell diagram carefully.

First, we need to decide: Is this an animal cell or a plant cell?

Clues that tell us it’s a plant cell:
- It has a rigid outer layer (label E) — that’s the cell wall, which animal cells do not have.
- There’s a large central space (label J) — that’s the central vacuole, much bigger in plant cells than in animal cells.
- There are small oval structures with internal stacks (like label F) — those are chloroplasts, where photosynthesis happens. Only plant cells (and some protists) have chloroplasts.
- The shape is rectangular/boxy with corners — typical of plant cells due to the cell wall; animal cells are usually rounder and more flexible.

So: Plant cell, because it has a cell wall, large central vacuole, and chloroplasts.

Now, name the labelled parts and their functions:

A — Nucleus: controls the cell’s activities; holds DNA.
B — Cytoplasm: jelly-like substance where organelles sit; site of many chemical reactions.
C — Nuclear membrane (or nuclear envelope): surrounds the nucleus; controls what enters/exits the nucleus.
D — Cell membrane (plasma membrane): controls what enters/exits the whole cell; protects inside.
E — Cell wall: rigid outer layer made of cellulose; gives support and protection.
F — Chloroplast: makes food (glucose) using sunlight (photosynthesis).
G — Mitochondrion (mitochondria, plural): makes energy (ATP) for the cell — “powerhouse”.
H — Vacuole membrane (tonoplast): surrounds the central vacuole; regulates movement in/out of vacuole.
I — Endoplasmic reticulum (rough or smooth): transport system; rough ER has ribosomes for protein making.
J — Central vacuole: stores water, nutrients, waste; helps keep the cell firm (turgor pressure).
K — Ribosome: makes proteins (some float free, some on ER).
L — Golgi apparatus: modifies, sorts, and packages proteins for shipping.

Unlabelled parts likely include:
- Peroxisomes (break down toxins/fats)
- Plasmodesmata (channels through cell wall connecting adjacent plant cells) — often not drawn but present in real plant cells
- Cytoskeleton (microtubules/microfilaments for shape and movement) — not visible in simple diagrams

But since the question asks to *identify some parts that are not labelled*, we can list common ones missing:
- Plasmodesmata
- Peroxisomes
- Cytoskeleton elements
- Sometimes nucleolus (inside nucleus, not always labelled separately)

Final Answer:
This is a plant cell because it has a cell wall (E), a large central vacuole (J), and chloroplasts (F), which animal cells lack.