virus explores cell interactive
DESCRIPTION
RELATIVE SIZES OF THINGSTRANSCRIPT
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http://www.youtube.com/watch?v=qc8hUUY_exQVirus explores cell interactive
http://www.disclose.tv/action/viewvideo/32619/Harvard___A_Journey_Through_Your_Body/Cool cell animation
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Cell membrane
Cell wall
cytoplasm
ribosomes
nucleusGolgi apparatus
mitochondrion
ER
chloroplastcentriolelysosome
prokaryote
animal plant
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RELATIVE SIZES OF THINGS
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CHARACTERISTICS OF PROKARYOTIC CELLS
AUTOTROPHS•
HETEROTROPHS
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EVOLUTION OF EUKARYOTIC CELLS EVOLUTION OF EUKARYOTIC CELLS FROM PROKARYOTIC CELLSFROM PROKARYOTIC CELLS
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Alzheimer's and the ER• ER recognizes and targets
excess proteins for degradation.
• If overloaded, a stress response is switched on.
• Prolonged stress leads to cell death and neuronal loss in Alzheimer's (who have excess protein in brain)
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GOLGI APPARATUS
• functional and structural impairments have been found in Alzheimer’s patients
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THE MAKING, MODIFYING, AND TRANSPORT OF PROTEINS
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LYSOSOMES AT WORK
• Tay Sachs disease has dysfunctional lysosomes• leads to paralysis, dementia, blindness, and death•Common in Quebeckers, Jews
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MITOCHONDRION
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• Kearns-Sayre syndrome: A neuromuscular disease caused by defects of the DNA in the mitochondria
• Leads to: • 1. Heart disease • 2. Degeneration of the
retina• 3. Progressive paralysis
of certain eye muscles
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Mitochondria and Aging
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CENTROSOME WITH CENTRIOLES
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MICROVILLI
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flagelli
cillia
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CHLOROPLAST
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JUNCTIONS BETWEEN CELLS
Tight junction Gap junction
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•Defects in cell junctions can result in heart diseases such as cardiomyopathy leading to an irregular heart beat and, eventually, muscle failure. •It has also been linked to Autism and Hailey-Hailey Disease.