Exam 1 review chapter 3
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prokaryotic
plasma membrane no nucleus cytoplasm no true organelle bacterial cells for example
Eukaryotic
Plasma membrane nucleus cytoplasm organelles human cells for example
light microscope
(1000x) magnification used to view living samples
Transmission Electron Microscope
(100,000x) magnification reveal internal details of cell structure
Scanning Electron Microscope
(100,000x) magnification provides 3-D view of cell surface
Cytoskeleton
structural framework of the cell, maintains cell shape
Microvilli
increasing surface area for absorbsion
Centroles
cell division
Cilia
mobile, found on cell lining airways and certain ducts
Ribosomes
protein synthesis
Proteasomes
regulations to proteins
Rough ER
has ribosomes on the surface attached to ribosomes
Smooth ER
no ribosomes on the surface lipid synthesis
Golgi Apparatus
refines, packages, and ships
Lysosomes
contains digestive enzymes
Peroxisomes
detoxify wastes produced by the cell
Mitochondria
power house of the cell
Nucleus with Nucleolus
Little brain contains the DNA nucleolus-synthesis of ribosome components
hypotonic
cell may swell and burst
plasma membrane
controls movement of materials into and out of cell Phospholipids (polar heads and non polar tails)
passive transport
cell does not expand energy
Active Transport
cell must expand energy
hypertonic
cell may shrink and die