ch 7-1 & 7-2: life is cellular
DESCRIPTION
Ch 7-1 & 7-2: Life is Cellular. Notes #8. What is the Cell Theory?. Cells are the basic unit of life. All cells come from pre-existing cells. 3. All organisms are made of cells. Common Cell Structures. 1. Cell Membrane. 2. Nucleus. 3. Cytoplasm. Common Cell Structures. - PowerPoint PPT PresentationTRANSCRIPT
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Ch 7-1 & 7-2: Life is Cellular
Ch 7-1 & 7-2: Life is Cellular
Notes #8Notes #8
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What is the Cell Theory?What is the Cell Theory?
1. Cells are the basic unit of life. 2. All cells come from pre-existing cells.
1. Cells are the basic unit of life. 2. All cells come from pre-existing cells.
3. All organisms are made of cells.
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Common Cell StructuresCommon Cell Structures
Cell Membrane
Cytoplasm
Nucleus
1.
2.
3.
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Common Cell StructuresCommon Cell Structures
1. Cell Membrane: Thin flexible barrier that surrounds a cell.
2. Nucleus: Present in some cells that contains DNA and controls cell activity.
3. Cytoplasm: Gel-like material within the cell, that keeps cell parts in place
1. Cell Membrane: Thin flexible barrier that surrounds a cell.
2. Nucleus: Present in some cells that contains DNA and controls cell activity.
3. Cytoplasm: Gel-like material within the cell, that keeps cell parts in place
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General Cell TypesGeneral Cell Types• 2 Types1) Prokaryotes: Organisms that… -are single celled -do NOT contain membrane-
bound cell parts -do NOT have a nucleusEx. Bacteria
• 2 Types1) Prokaryotes: Organisms that… -are single celled -do NOT contain membrane-
bound cell parts -do NOT have a nucleusEx. Bacteria
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2) Eukaryotes: Organisms that -have a nucleus -have membrane-bound cell partsEx. Plant and Animal Cells
2) Eukaryotes: Organisms that -have a nucleus -have membrane-bound cell partsEx. Plant and Animal Cells
Human Cheek Cells
Onion Cell
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Prokaryotic vs Eukaryotic CellsProkaryotic vs Eukaryotic Cells
DNACell Wall
Cell MembraneRibosome
Flagellum
Prokaryotic Cell
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Eukaryotic CellEukaryotic Cell
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Prokaryotic CellProkaryotic Cell Eukaryotic CellEukaryotic Cell
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What makes eukaryotic cells special?What makes eukaryotic cells special?• Unlike prokaryotic cells, all
eukaryotic cells have a membrane-bound nucleus, and specialized internal cell structures called organelles.
• Unlike prokaryotic cells, all eukaryotic cells have a membrane-bound nucleus, and specialized internal cell structures called organelles.
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Common Structures in All Eukaryotic CellsCommon Structures in All Eukaryotic Cells• Nucleus: Contains DNA and controls the
cell’s activities -Chromatin: Tightly coiled strands of
DNA & protein found within the nucleus.• Nucleolus: Dense small region found
within the nucleus that makes ribosomes
• Nuclear Envelope: Controls what materials go in and out of the nucleus.
• Nucleus: Contains DNA and controls the cell’s activities
-Chromatin: Tightly coiled strands of DNA & protein found within the nucleus.
• Nucleolus: Dense small region found within the nucleus that makes ribosomes
• Nuclear Envelope: Controls what materials go in and out of the nucleus.
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NucleusNucleus
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Ribosomes (Free)Ribosomes (Free)• Makes protein for the cell to use• Makes protein for the cell to use
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Endoplasmic Reticulum (ER)Endoplasmic Reticulum (ER)• Internal transport system of the cell- Rough ER: has ribosomes attached
& makes proteins to be exported out
of cell.- Smooth ER: no ribosome
attachment & makes lipids
• Internal transport system of the cell- Rough ER: has ribosomes attached
& makes proteins to be exported out
of cell.- Smooth ER: no ribosome
attachment & makes lipids
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Endoplasmic ReticulumEndoplasmic Reticulum
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Golgi ApparatusGolgi Apparatus• Pancake-like stacks that modifies
and packages proteins to be exported out of cell.
• Pancake-like stacks that modifies and packages proteins to be exported out of cell.
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MitochondriaMitochondria• Makes cell energy (ATP) from food
(glucose) through cell respiration.• Makes cell energy (ATP) from food
(glucose) through cell respiration.
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CytoskeletonCytoskeleton
• Helps support the cell and gives it shape
• Helps support the cell and gives it shape
Cytoskeleton
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Found in Animal Cells OnlyFound in Animal Cells Only• Centrioles: Help cells reproduce• Centrioles: Help cells reproduce
Centrioles
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Found in Animal Cells OnlyFound in Animal Cells Only• Lysosomes: Breaks down food,
wastes, and used organelles with digestive enzymes
• Lysosomes: Breaks down food, wastes, and used organelles with digestive enzymes
Digestive Enzymes
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Found in Plant Cells OnlyFound in Plant Cells Only
• Cell Wall: Surrounds and protects the cell membrane.
• Cell Wall: Surrounds and protects the cell membrane.
Cell MembraneCell Wall
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Found in Plants OnlyFound in Plants Only• Chloroplasts: Converts sunlight
energy into glucose by photosynthesis.
• Central Vacuole: Stores water, food, and waste for the plant cell
• Chloroplasts: Converts sunlight energy into glucose by photosynthesis.
• Central Vacuole: Stores water, food, and waste for the plant cell
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• Two types of eukaryotic cells we have studied include animal & plant cell
• Two types of eukaryotic cells we have studied include animal & plant cell
Animal Cell Plant Cell
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ClassworkClasswork
1) Workbook Section 7-1 & 7-2 (1-34)• ANSWERS ONLY (Stamped)2) Section AssessmentWrite out QUESTIONS & ANSWERS(7-1); #1-5 p. 172(7-2); #1-6 p 183
1) Workbook Section 7-1 & 7-2 (1-34)• ANSWERS ONLY (Stamped)2) Section AssessmentWrite out QUESTIONS & ANSWERS(7-1); #1-5 p. 172(7-2); #1-6 p 183
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Double Bubble Thinking MapDouble Bubble Thinking MapCopy the following words on your paper
Then complete the Double Bubble Thinking Map
• Cell Membrane• Prokaryotic Cells• Cytoplasm• Contains membrane bound-
Organelles• Eukaryotic Cells• Contains a Nucleus• Contains DNA• Ex. Bacteria• Ex. Plant & Animal Cell
• Cell Membrane• Prokaryotic Cells• Cytoplasm• Contains membrane bound-
Organelles• Eukaryotic Cells• Contains a Nucleus• Contains DNA• Ex. Bacteria• Ex. Plant & Animal Cell
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Double Bubble Thinking MapDouble Bubble Thinking MapYellow Bubbles: Things in Common; Grey: Unique to Cell
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Double Bubble Thinking MapDouble Bubble Thinking MapYellow Bubbles: Things in Common; Grey: Unique to Cell
Prokaroytic Cells
EukaroyticCells