Asked by jojo
What is cytoplasm
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GPT-5 mini
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The cytoplasm is the jelly-like material inside a cell that surrounds the nucleus (in eukaryotes) or fills the entire cell (in prokaryotes). It contains the cytosol (the aqueous solution), organelles (in eukaryotic cells), ribosomes, cytoskeleton filaments, and various inclusions like stored nutrients.
Key points
- Composition: mostly water (≈70–80%) with dissolved ions, proteins, metabolites and suspended structures (organelles, ribosomes, vesicles).
- Cytosol vs cytoplasm: "cytosol" is the fluid portion only; "cytoplasm" includes the cytosol plus the organelles and suspended particles.
- Functions: site of many metabolic reactions (e.g., glycolysis), houses protein synthesis machinery (ribosomes), enables intracellular transport and signaling, gives structural support via the cytoskeleton, and stores materials.
- Physical properties: a crowded, dynamic medium that behaves like a gel/sol and supports processes such as cytoplasmic streaming.
- Differences by cell type: prokaryotic cytoplasm contains no membrane-bound organelles; eukaryotic cytoplasm contains organelles (mitochondria, endoplasmic reticulum, etc.) suspended in the cytosol.
In short, the cytoplasm is the active internal environment of the cell where much of the cell’s chemistry and mechanics occur.
Key points
- Composition: mostly water (≈70–80%) with dissolved ions, proteins, metabolites and suspended structures (organelles, ribosomes, vesicles).
- Cytosol vs cytoplasm: "cytosol" is the fluid portion only; "cytoplasm" includes the cytosol plus the organelles and suspended particles.
- Functions: site of many metabolic reactions (e.g., glycolysis), houses protein synthesis machinery (ribosomes), enables intracellular transport and signaling, gives structural support via the cytoskeleton, and stores materials.
- Physical properties: a crowded, dynamic medium that behaves like a gel/sol and supports processes such as cytoplasmic streaming.
- Differences by cell type: prokaryotic cytoplasm contains no membrane-bound organelles; eukaryotic cytoplasm contains organelles (mitochondria, endoplasmic reticulum, etc.) suspended in the cytosol.
In short, the cytoplasm is the active internal environment of the cell where much of the cell’s chemistry and mechanics occur.
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