Download Chapter 7 The Cell

Chapter 7
The Cell
Basic unit of life.
Come from pre-existing cells.
Organelles-Act like little organs of a cell
Shape tells function
2 Types of Cells
Prokaryotic Cells
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Smaller
No nucleus
No membrane-bound organelles
Bacteria
Blue-Green Algae
Archaea
Binary Fission
Prokaryotes
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Streptococcus pyogenes, Anabaena,
and Methanogens
Eukaryotic Cells
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Larger
Nucleus
Membrane-bound organelles
All other life: (Animals, Plants, Fungi,
Protists)
Eukaryotes
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Cougars, Eastern Red Cedar, Bread
Mold, and Amoeba proteus
Organelles Common to All
Cells
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Plasma Membrane-Boundary
between cell and environment.
Homeostasis
Semi-Permeable
Phospholipids
Bilayer
Cytoplasm
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All material inside cells
Holds organelles
Mostly water
Ribosomes
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Protein Synthesis
Other Organelles
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Nucleus-Brain of cell/controls all cell
activities. Cell division.
Chromatin-DNA spread out in
nucleus
Nucleolus-Dark spot. Makes
ribosomes.
Plasmids
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Circular DNA
Prokaryotes
Mitochondria
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Cellular Respiration (plants and
animals)
“Powerhouse” of cell
Uses oxygen to turn food (glucose)
into energy
Has DNA
Chloroplast
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Photosynthesis
Contains chlorophyll
Has DNA
Only Plant Cells
Vacuole
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Storage
Giant water bubble
Plant cells
Contractile Vacuole
Contractile Vacuole
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Water balance ( some animal cells ex.
– Paramecium)
Eyespot
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Sensitive to light (Euglena)
Movement
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Flagella
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Cilia
Pseudopods
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Extension of cytoplasm (Amoeba)
Cell Wall
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Thick, rigid border around cell
membrane.
Plant Cells, fungi and Prokaryotes only
Maintains shape/structure
Plants-Cellulose
Fungi-Chitin
Adaptive Behavior
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Chemotaxis-Attraction to chemicals
Phototaxis-Attraction to light