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17 Terms
1
Prokaryotic Cells
Smaller, simpler cells that lack a nucleus and membrane-bound organelles.
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2
Eukaryotic Cells
Larger, more complex cells that contain a nucleus and membrane-bound organelles.
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3
Nucleus
The control center of the cell that houses genetic material (DNA) and regulates protein synthesis.
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4
Ribosomes
Sites of protein synthesis, composed of RNA and proteins where mRNA is translated into polypeptides.
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5
Endomembrane System
Includes the nuclear envelope, ER, Golgi apparatus, lysosomes, and plasma membrane; modifies, packages, and transports lipids and proteins.
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6
Mitochondria
Double-membraned organelles known as the cell's powerhouse that produce ATP through aerobic respiration.
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7
Chloroplasts
Double-membraned organelles that conduct photosynthesis, converting sunlight, water, and carbon dioxide into glucose and oxygen.
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8
Cytoskeleton
A network that provides structural support, facilitates transport, and enables cell movement, composed of microtubules, actin microfilaments, and intermediate filaments.
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9
Microtubules
Hollow tubes in the cytoskeleton that provide rigidity and transport tracks for organelles.
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10
Actin Microfilaments
Thin fibers involved in muscle contraction and alterations in cell shape.
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11
Intermediate Filaments
Components of the cytoskeleton that provide mechanical support and stabilize cell structures.
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12
Plant Cell Walls
Rigid structures composed mainly of cellulose that provide structural support and define cell shape.
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13
Extracellular Matrix (ECM)
A flexible network of proteins and polysaccharides in animal cells that supports cellular functions, communication, and attachment.
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14
Plasmodesmata
Intercellular junctions in plant cells that allow transport of substances between cells.
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15
Tight Junctions
Intercellular junctions in animal cells that prevent leakage and allow for adhesion between neighboring cells.
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16
Anchoring Junctions
Intercellular junctions that provide mechanical support and adhesiveness between neighboring cells.
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17
Gap Junctions
Intercellular junctions in animal cells that allow communication and transport of materials between neighboring cells.