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Nucleus
Function
Why is the nucleus reffered to as the main office?
holds hereditary information
Sends information in/out
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Cytoskeleton
Function
Provides shape and interenal organization
network of protein filaments
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Microfilament
- threadlike protein
- (actin)
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Actin
assemply/disassembly of actin is responsible for cytoplasmic movement
-
microtubules
- made of tubulin
- maintain cell shape
- critical during mitosis
-
tubulin
hollow tubes of protein
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Compare-Contrast Actin & Tubulin
- Actin is a thin thread like protein, tubulin is a hollow tube.
- Actin is for movement, tubulin for cell shape
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Cell Membrane Structures
Microvilli, Cilia, Flagella
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Ribosome
Function
Special difference in organelle
- Makes proteins using Translation
- Ribosome= TRNA anticodon + Amino Acid ---Protein
not lipid bilayer
-
ER
2 Types
Functions
- -Protein Synthesis-
- Site where protein exported from cell
- Site where lipid components of cell mem assembled
- Rough- involved in protein syn
- smooth- involved in nonprotein syn
-
Golgi Apparatus
Func
- hold proteins made by Rough ER
- --modifies sorts packages proteins for storage (in lysosomes) or for exporrt
-
Lysosomes
Func
- produced by golgi
- small sacs filled with digestive enzymes
-
Peroxisomes
- smaller than lysosomes
- made by Rough ER
- NEUTRALIZE TOXINS (like alcohol)
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Mitochondria
- Cell resperation
- Convert food E into Usable E
- Double Membrane-
-
Chloroplasts
Where?
PLANTS ONLY
Capture E from sun-- photosynthesis-- glucose
double membrane
Stroma- space between pancakes (GRANA) where calvin cycle takes place (makes glucose + O2)
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Robert Hooke
1665- thin sections of cork, square cubes called CELLS
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Schleiden
all plants made of cells
-
Schwann
all animals made of cells
-
Virchow
- both animals & plants have cells
- COmpeltes cell theory
-
Leeunwenhoek
tiny organisms in pond water
-
CELL THEORY
- 1.) All living things made of cells.
- 2.) Cells are basic struc/func of all living things
- 3.) New cells come from pre existing cells
-
-
Eukaryotic
- NUCLEUS,
- larger more complex than pro
- vary from single cell to multi cellular organisms
-
ALL CELLS HAVE....
- cell membrane
- DNA (at some point)
-
2 Major Parts in Euk Cell Struc
-
Cell Membrane
Func
determines what goes in/out of cell
- selectively permeable or semipermeable
- composed of lipids and proteins
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