Cell Biology: Organelles and Functions
Eukaryotic cell organelles, their structures and functions: nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and cell membrane transport.
The organelles of eukaryotic cells with their function, structure and key processes: nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, the cell membrane, ribosomes and the cytoskeleton, plus chloroplasts, peroxisomes, the central vacuole and the plant cell wall.
Use it when
- You need an organelle's role and the processes it hosts.
- You are comparing animal and plant cell structures.
Watch out for
- Not every cell has every organelle: plant cells have chloroplasts and walls, animal cells do not, and mature red blood cells lack a nucleus.
- Prokaryotic cells have no membrane-bound organelles; the entries describe eukaryotes.
The data
Organelles
12 rows
| Name | Function | Structure | Key processes |
|---|---|---|---|
| Nucleus | Stores genetic material (DNA); site of transcription and RNA processing | Double membrane (nuclear envelope) with nuclear pores; contains nucleolus |
|
| Mitochondria | ATP production via oxidative phosphorylation; cellular respiration | Double membrane; inner membrane folded into cristae; contains own circular DNA |
|
| Endoplasmic Reticulum (ER) | Rough ER: protein synthesis and folding. Smooth ER: lipid synthesis, detoxification, calcium storage | Network of membranous tubules and sacs; rough ER has ribosomes on surface |
|
| Golgi Apparatus | Modifies, sorts, and packages proteins for secretion or delivery to other organelles | Stack of flattened membrane-bound cisternae (cis, medial, trans faces) |
|
| Lysosomes | Intracellular digestion; break down waste materials, damaged organelles, and engulfed pathogens | Membrane-bound vesicles containing ~60 hydrolytic enzymes (acid hydrolases) |
|
| Cell Membrane (Plasma Membrane) | Selective barrier; regulates transport in/out of cell; cell signaling and adhesion | Phospholipid bilayer with embedded proteins (fluid mosaic model); cholesterol for stability |
|
| Ribosomes | Protein synthesis (translation of mRNA into polypeptide chains) | Two subunits (large + small); composed of rRNA and proteins; 80S in eukaryotes, 70S in prokaryotes |
|
| Cytoskeleton | Maintains cell shape; enables cell movement; intracellular transport; cell division | Microtubules (tubulin), microfilaments (actin), intermediate filaments |
|
| Chloroplasts | Photosynthesis: converting light energy into chemical energy stored in sugars | Double membrane enclosing stacks of thylakoids (grana) in a fluid stroma; contain their own DNA and chlorophyll |
|
| Peroxisomes | Break down fatty acids and detoxify harmful compounds using oxidative reactions | Single-membrane vesicles containing oxidative enzymes such as catalase |
|
| Central Vacuole | Stores water, ions and waste, and maintains turgor pressure in plant cells | Large membrane-bound sac (tonoplast) that can fill most of a mature plant cell |
|
| Cell Wall | Gives plant, fungal and bacterial cells shape and protection against bursting | Rigid layer outside the cell membrane; cellulose in plants, chitin in fungi, peptidoglycan in most bacteria |
|
Fields
The shape of this dataset, read from the data itself: every column, its type and a real value. Agents can use this to plan a query without fetching the whole document.
| Section | Field | Type | Example |
|---|---|---|---|
| organelles | name | string | Nucleus |
| organelles | function | string | Stores genetic material (DNA); site of transcri… |
| organelles | structure | string | Double membrane (nuclear envelope) with nuclear… |
| organelles | key_processes | array | [3 items] |
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