The cell is the basic unit of life, and organelles such as the nucleus, mitochondria, ER, and Golgi share the work.
The nucleus manages genetic information, mitochondria make ATP, and ribosomes synthesize proteins.
Plant cells have a cell wall, chloroplasts, and a large vacuole, and secreted proteins travel from the ER through the Golgi to the membrane.
Use the slider to pick each organelle and explore its place and role.
Cell = the basic unit of life
If genetic control, energy production, and protein processing all run in one open room, synthesis and transport get in each other's way. Only after membranes cut the space into zones can the nucleus, mitochondria, ER, and Golgi do their jobs at once, and a membraneless site such as the ribosome still sits on that same flow. Animal and plant cells share nucleus, mitochondria, ribosomes, ER, and Golgi; a cell wall, chloroplasts, and a large vacuole are added on the plant side. Before you memorize organelle names, it is less confusing to confirm the zones and the front-to-back of the secretory path on the figure and the table.
🔬 A cell is like a city
①Nucleus = city hall (manages genetic info, sends commands)
②Mitochondria = power plant (produces ATP energy)
③ER = factory (synthesizes proteins/lipids), Golgi = logistics center (packaging/delivery)
Explore Organelles
If you decide there is no cell whenever a nucleus is missing from the center, you drop both bacteria that lack a nuclear envelope and red blood cells that have already lost a nucleus. A nucleus alone does not explain the rest of the work, so membrane-bounded organelles and membraneless ribosomes have to be read on one list. Leave the ribosome out and the place where proteins are made is a blank; drawing a cell wall or chloroplasts into the animal column is the same slip as not separating shared structures from extras. The order in which a secreted protein goes from rough ER through the Golgi to the plasma membrane shows up when you follow the zones front to back, not when you only recite names.
Nucleus
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Major organelles of an animal cell — nucleus, mitochondria, ER, Golgi, ribosome, lysosome
Inside an oval membrane the nucleus, mitochondria, ER, Golgi, ribosomes, and lysosomes are drawn in fixed seats, and the title reads animal cell structure. Slider values 0 through 5 pick one organelle, thicken its outline, and show its name plus a one-line role at the bottom; value 6 lights all six for the whole view. The nucleus is a double circle, a mitochondrion an oval with three inner folds, the ER four bent lines, the Golgi four flat pouches, ribosomes six small dots, and a lysosome a purple circle. There is no plant-cell cutaway in this panel; that comparison lives only in the table. No organelle changes its seat.
💡 Inspect each organelle
①Nucleus: DNA storage, transcription control, nuclear envelope (double)
②Mitochondria: cellular respiration (ATP), own DNA