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A Review of Cell Structures
Prokaryotes and Eukaryotes
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The Earliest Trace of Life?
Reference Coacervate Lab
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The Scale of Life Reference Cell Survey Lab – Chloroplast, nucleus, cell membrane, cell wall
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Cell Size: SA : V Ratio Reference to Embryology/Evolution connection
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Microscope Types 1mm = 1000um
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Electron microscopes = advantages/disadvantages
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Prokaryotic Cell
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Fimbriae & Flagella Discuss fimbriae and flagella function
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Prokaryote Flagellum – NO microtubules; works like a “crank”
Eukaryote Flagellum – involve microtubules in a pattern of 9+2 arrangement. Works by side to side action (sperm) Differences btwn euk and prok flagella
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Endosymbiosis – Evolution of Eukaryotic Cell
Endosymbiotic Theory of Eukaryotic Evolution Description: Evidence: 1. Ribosome size 2. Size 3. DNA presence in mito and chloro 4. Self-sufficient protein production within mito and chloro
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Eukaryotic Cells
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Nuclear envelope is a double-double plasma membrane
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Difference between chromatin and chromosomes -
“X” = two twin chromosomes = chromatid
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RER vs. SER
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Golgi apparatus: Cis vs trans side
Moveable membrane and linked to ER and Lysosome and Cell membrane
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Endomembrane – RER Golgi Endocytosis Lysosome Exocytosis
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The Mighty Mitochondrion
Nitochondria – ATP production in AEROBIC euks only.
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Reference to Cell Survey Lab and elodea
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Figure Being Green \
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Peroxisomes – filled with catalase enzyme which hydrolyzes H2O2 to H2O and O2
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Vacuoles in plants are large – however in animals they are still present but smaller
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The Cytoskeleton: structure, movement
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Alpha and Beta Tubulin = two different versions of a protein polypeptide that arrange themselves in quarternary srurcture (aka spindle fibers) Actin – same polypeptide arranged in sequence
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Cilia and Flagella in euks = microtubules
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9+2 arrangement of microtubules
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Plant Cell Wall – cellulose (polysaccharide)
Helps plant maintain turgidity
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ECM = ExtraCellular Matrix
proteins, lipids, polysaccharides (proteoglycan)
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