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A Prokaryotic Cell

of. A Prokaryotic Cell. Directions: Match the structure with the correct function. ___Most unicellular organisms, such as bacteria, that do not have membrane bound organelles. ___Site for protein synthesis. ___Supports and protects the cell

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A Prokaryotic Cell

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  1. of A Prokaryotic Cell

  2. Directions: Match the structure with the correct function. ___Most unicellular organisms, such as bacteria, that do not have membrane bound organelles. ___Site for protein synthesis. ___Supports and protects the cell ___Maintains homeostasis by its selective permeability. ___Coaled up DNA into a circular loop. ___The region of the cell that contains genetic information. ___Gelatinous-like fluid mostly composed of water. ___Long projections that move with a whip-like motion. a) Prokaryotic b) Ribosome c) Cell Wall d) Plasma Membrane e) Plasmid f) Nucleoid g) Flagella h) Cytoplasm

  3. Prokaryotic Cells • oldest single-celled organisms • most common cell • found almost everywhere • no true nucleus • bacteria

  4. Cell Wall • rigid and inflexible wall • thick, tough, fibrous barrier • very porous • Supports and protects the cell

  5. Plasma Membrane • flexible boundary • lipid bilayer • maintains homeostasis • selectively permeable • allows nutrients, ions, and other substances across the membrane through protein channels

  6. Cytoplasm • clear, gelatinous fluid • contains all the necessary parts of a prokaryotic cell • composed mostly of water

  7. Ribosomes • floats freely in the cytoplasm • receive and translate genetic information • site for protein synthesis Actual structure of a ribosome

  8. Nucleoid • region of DNA • DNA is condensed into a circular loop  PLASMID • How is this different from • a nucleus?

  9. long projections • produce whip-like motions • major means of locomotion/movement for cell Flagella

  10. Site of protein synthesis Contained in the nucleoid, condensed into circular loop called PLASMID Gel-like fluid in cell, mostly composed of water Major means of locomotion Supports and protects the cell Selectively permeable to maintain homeostasis

  11. Quick Review ___ Most unicellular organisms, such as bacteria, that do not have membrane bound organelles. PROKARYOTE ___ Site for protein synthesis. RIBOSOME ___ Maintains homeostasis by its selective permeability. PLASMA MEMBRANE ___ Supports and protects the cell CELL WALL ___ Coaled up DNA into a circular loop. PLASMID ___ Long projections that move with a whip-like motion. FLAGELLA ___The region of the cell that contains genetic information. NUCLEIOD ___Gelatinous-like fluid mostly composed of water. CYTOPLASM

  12. Eukaryotic Cell Animal Cell Plant Cell http://www.youtube.com/watch?v=LMVQ-INMSVw&feature=related • http://www.youtube.com/watch?v=PXbv95P3uhI

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