UNIT 2: CELL Organelles & Prokaryotes vs. Eukaryotes

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Cell

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The basic unit of life that makes up all living organisms.

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Prokaryote

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A simple, single-celled organism without a nucleus or membrane-bound organelles.

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Eukaryote

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A complex organism with cells that have a nucleus and membrane-bound organelles.

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Nucleus

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The control center of a eukaryotic cell, containing DNA.

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Organelle

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A specialized structure within a cell that performs specific functions.

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Plasma Membrane

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The cell's outer layer that controls what enters and exits.

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Cell Wall

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A rigid outer layer found in plant cells, providing structure and protection.

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Chloroplast

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An organelle in plant cells where photosynthesis occurs.

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Chlorophyll

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The green pigment in chloroplasts that absorbs sunlight for photosynthesis.

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Cilia

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Small, hair-like structures on the cell surface that help in movement or moving substances.