organelles of the cell three sections of the cell all cells take in food, rid waste, reproduce 3...
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Organelles of the Cell
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Three Sections of the Cell
• All cells take in food, rid waste, reproduce
• 3 main sections
• 1) Plasma membrane• 2) Nucleus• 3) Cytoplasm
cytoplasm
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Cytoplasm • Jelly-like material inside of the cell
• Most organelles float within– Nucleus– Ribosomes– Vacuoles– Mitochondria– Chloroplasts– ER– Golgi Body– Lysosomes
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Cytoplasm • Jelly-like material inside of the cell
• Most organelles float within– Nucleus– Ribosomes– Vacuoles– Mitochondria– Chloroplasts– ER– Golgi Body– Lysosomes
Department of General Instrumentation (KUN) (E.S. Pierson, B. van der Linden) Cytoplasmic
streaming!
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Cytoplasm • Jelly-like material inside of the cell
• Most organelles float within– Nucleus– Ribosomes– Vacuoles– Mitochondria– Chloroplasts– ER– Golgi Body– Lysosomes
• Job: Help dissolve solutes & move materials around
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• Aka: Cell Membrane• Composition: Bilayer of lipids & proteins• Job: Allow materials to enter/exit• Semi-Permeable: only specific materials may
enter and exit through pores & protein channels – NOT EVERYTHING can pass through.
lipid lipid lipid lipid lipid lipid lipid lipid lipid
lipid lipid lipid lipid lipid lipid lipid lipid lipid
Protein channel
glucose
glucose
glucose
glucose
lipid
lipid
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• Job: Controls cell activity
• Inside:
1) Chromatin• long strands of
DNA• holds info to
make proteins
2) Nucleolus: makes ribosomes
nucleolus
nucleolus
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Endoplasmic Reticulumnucleolus
chromatin
nuclear envelope
• Rough ER– Receives ribosomes from the
nucleoulus– Job: Tunnel system that transports
protein making ribosomes
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• Rough ER– Receives ribosomes from the
nucleus– Job: Tunnel system that transports
protein making ribosomes
• Smooth ER:– makes fats &
breaks down toxins (no ribosomes)
Endoplasmic Reticulum
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• Created by nucleolus• Transported by the rough ER• Job: make proteins
Ribosomes
ribosome
Amino acid
Amino acid
Amino acid
Amino acid
Amino acid
Amino acid
Amino acid
protein
ribosomeribosomeribosomeribosomeribosomeribosome
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Golgi Body
• Job: Modifies, sorts, & packages proteins• Proteins released inside a protective vesicle
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1) Nucleolus makes ribosomes2) Ribosome travels through rough ER making proteins
Nucleus
nucleolus
vesicle
protein
ribosome
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vesicle
protein
ribosome
protein
protein
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1) Nucleolus makes ribosomes2) Ribosome travels through rough ER making proteins3) Golgi Body sorts & packages the protein4) Vesicle releases the protein from the cell
vesicle
vesicle
protein
protein
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1) Nucleolus makes ribosomes2) Ribosome travels through rough ER making proteins3) Golgi Body sorts & packages the protein4) Vesicle releases the protein from the cell
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1 minute: Discuss with your neighbor
1) Which organelle builds proteins? ____________
2) Stores DNA? ____________
3) Produces ribosomes? ___________
4) Creates fats and breaks down toxins? ___________
5) Packages and releases proteins from a cell? __________
6) Allows material to enter/exit a cell? ______________
7) Links chains of amino acids together? ______________
Ribosome
Nucleus
Nucleolus
Smooth ER
Golgi body
Cell membrane
Ribosome
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1 minute: Discuss with your neighboor
Place the following steps of protein creation in order from start to finish….
A: Golgi body packages and exports the finished proteins in a vesicle
B: Ribosomes travel along the rough ER and create proteins
C: Nucleolus makes ribosomes
D: Ribosomes exit the nucleus
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The Answer is….
Place the following steps of protein creation in order from start to finish….
C: Nucleolus makes ribosomes
D: Ribosomes exit the nucleus
B: Ribosomes travel along the rough ER and create proteins
A: Golgi body packages and exports the finished proteins in a vesicle
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Mitochondria• Job: Create ATP
(energy molecule) in a process called cellular respiration
• Endosymbiosis theory: once free living organisms that became parts of modern cells– Evidence:
• Own DNA & ribosomes
• Make proteins
• Replicate
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Mitochondria ancestor
A large predator cell devours the mitochondria ancestor
Mitochondria survive and divide
The predator cell divides, splitting apart the mitochondria
The process continues. Overtime, the two are dependent on each other.
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Lysosome
cell
p r ot ein
protein
Lysosome(with enzymes inside)
• Contain digestive enzymes
• Jobs:
1) Break down food
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White blood cell
Lysosome
Lysosome(with enzymes inside)
• Contain digestive enzymes
• Jobs:
1) Break down food
2) Kill pathogens
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Lysosome• Contain digestive
enzymes• Jobs:
1) Break down food
2) Kill pathogens
3) Autolysis: Destroy dying cell
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• Job: movement
• Cilia = short hair-like extensions (numerous)
• Flagella = long whip-like extension (very few)
Sperm cells swim with their flagellum
flagellum
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• Job: movement
• Cilia = short hair-like extensions (numerous)
• Flagella = long whip-like extension (very few)
Fertilized egg grows into a fetus
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• Job: movement
• Cilia = short hair-like extensions (numerous)
• Flagella = long whip-like extension (very few)
9 months later…
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• Job: movement
• Cilia = short hair-like extensions (numerous)
• Flagella = long whip-like extension (very few)
14 years later…
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• Job: movement
• Cilia = short hair-like extensions (numerous)
• Flagella = long whip-like extension (very few)
4 years later…
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• Job: movement
• Cilia = short hair-like extensions (numerous)
• Flagella = long whip-like extension (very few)
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• Outermost layer of plant, fungi, & bacteria cells
plants fungi bacteria
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• Outermost layer of plant, fungi, & bacteria cells
• Job: Adds support for growth
Plasma membrane
Cell wall
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• Outermost layer of plant, fungi, & bacteria cells
• Job: Adds support for growth
• Made of tough cellulose– Hard to
digest• Witnessed by
Robert Hooke in 1665
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• Job: Perform photosynthesis
Several dozen plant cells… lets zoom inchloroplasts
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• Job: Perform photosynthesis
Look for them flowing in the cytoplasm during our lab activity!
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• Job: Perform photosynthesis
• Chlorophyll molecules absorb sunlight & convert water and CO2 into sugars
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• Job: Perform photosynthesis
• Chlorophyll molecules absorb sunlight & convert water and CO2 into sugars
• Endosymbiosis theory: were once free living organisms that became parts of modern cells
• Evidence:– Own DNA and ribosomes– Make proteins– Replicate Chloroplast ancestor
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• Job: Stores food, water, waste, color pigments
• Plant cells: Large central vacuole
vacuole
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• Job: Stores food, water, waste, color pigments
• Plant cells: Large central vacuole
CentralVacuole
Cytoplasmic streaming
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• Job: Stores food, water, waste, color pigments
• Plant cells: Large central vacuole
• Animal cells: Scattered smaller vacuoles
vacuoles
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• Job: Stores food, water, waste, color pigments
• Plant cells: Large central vacuole
• Animal cells: Scattered smaller vacuoles
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Kobe Kuiz1) Pick an organelle…any organelle. Describe its function.2) Name 7 organelles that can be found within the cytoplasm.3) Describe the pathway that proteins travel from creation to
exportation.4) List various reasons to help support the theory of
endosymbiosis.5) Name two organelles that plant cells have and animal cells
do not.6) Which organelle creates ATP energy for cells?7) Which organelle converts sunlight into sugar?8) Which organelle creates ribosomes?9) Which organelle fuses with the cell membrane to release
proteins?10)Which molecule holds the information to make a protein?