a prokaryotic cell
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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 - PowerPoint PPT PresentationTRANSCRIPT
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A Prokaryotic Cell
of
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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) Prokaryoticb) Ribosomec) Cell Wall
d) Plasma Membranee) Plasmidf) Nucleoidg) Flagella
h) Cytoplasm
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Prokaryotic Cells
• oldest single-celled organisms• most common cell• found almost everywhere• no true nucleus• bacteria
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Cell Wall• rigid and inflexible wall
• thick, tough, fibrous barrier• very porous
• Supports and protects the cell
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Plasma Membrane• flexible boundary • lipid bilayer• maintains homeostasis• selectively permeable• allows nutrients, ions, and other
substances across the membrane through protein channels
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Cytoplasm• clear, gelatinous fluid• contains all the
necessary parts of a prokaryotic cell
• composed mostly of water
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Ribosomes• floats freely in the cytoplasm• receive and translate genetic information• site for protein synthesis
Actual structure of a ribosome
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Nucleoid• region of DNA• DNA is condensed into a circular loop PLASMID• How is this different from a nucleus?
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Flagella
• long projections• produce whip-like motions• major means of
locomotion/movement for cell
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Site of protein synthesis
Contained in the nucleoid, condensed into circular loop called PLASMID
Major means of locomotion
Supports and protects the cell
Selectively permeable to maintain homeostasis
Gel-like fluid in cell, mostly composed of water
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Quick Review___ Most unicellular organisms, such as bacteria, that
do not have membrane bound organelles. PROKARYOTE
___ Site for protein synthesis. RIBOSOME
___ Supports and protects the cell CELL WALL
___ Maintains homeostasis by its selective permeability.
PLASMA MEMBRANE
___ Coaled up DNA into a circular loop. PLASMID
___The region of the cell that contains genetic information.
NUCLEIOD
___Gelatinous-like fluid mostly composed of water. CYTOPLASM
___ Long projections that move with a whip-like motion.
FLAGELLA
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Eukaryotic Cell
Animal Cell• http://www.youtube.com/w
atch?v=PXbv95P3uhI
Plant Cell• http://www.youtube.com/w
atch?v=LMVQ-INMSVw&feature=related