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A Review of Cell Structures

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Presentation on theme: "A Review of Cell Structures"— Presentation transcript:

1 A Review of Cell Structures
Prokaryotes and Eukaryotes

2 The Earliest Trace of Life?
Reference Coacervate Lab

3 The Scale of Life Reference Cell Survey Lab – Chloroplast, nucleus, cell membrane, cell wall

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5 Cell Size: SA : V Ratio Reference to Embryology/Evolution connection

6 Microscope Types 1mm = 1000um

7 Electron microscopes = advantages/disadvantages

8 Prokaryotic Cell

9 Fimbriae & Flagella Discuss fimbriae and flagella function

10 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

11 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

12 Eukaryotic Cells

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16 Nuclear envelope is a double-double plasma membrane

17 Difference between chromatin and chromosomes -
“X” = two twin chromosomes = chromatid

18 RER vs. SER

19 Golgi apparatus: Cis vs trans side
Moveable membrane and linked to ER and Lysosome and Cell membrane

20 Endomembrane – RER Golgi Endocytosis Lysosome Exocytosis

21 The Mighty Mitochondrion
Nitochondria – ATP production in AEROBIC euks only.

22 Reference to Cell Survey Lab and elodea

23 Figure Being Green \

24 Peroxisomes – filled with catalase enzyme which hydrolyzes H2O2 to H2O and O2

25 Vacuoles in plants are large – however in animals they are still present but smaller

26 The Cytoskeleton: structure, movement

27 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

28 Cilia and Flagella in euks = microtubules

29 9+2 arrangement of microtubules

30 Plant Cell Wall – cellulose (polysaccharide)
Helps plant maintain turgidity

31 ECM = ExtraCellular Matrix
proteins, lipids, polysaccharides (proteoglycan)

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