virus explores cell interactive
DESCRIPTION
RELATIVE SIZES OF THINGSTRANSCRIPT
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
Cell membrane
Cell wall
cytoplasm
ribosomes
nucleusGolgi apparatus
mitochondrion
ER
chloroplastcentriolelysosome
prokaryote
animal plant
RELATIVE SIZES OF THINGS
CHARACTERISTICS OF PROKARYOTIC CELLS
AUTOTROPHS•
HETEROTROPHS
EVOLUTION OF EUKARYOTIC CELLS EVOLUTION OF EUKARYOTIC CELLS FROM PROKARYOTIC CELLSFROM PROKARYOTIC CELLS
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)
GOLGI APPARATUS
• functional and structural impairments have been found in Alzheimer’s patients
THE MAKING, MODIFYING, AND TRANSPORT OF PROTEINS
LYSOSOMES AT WORK
• Tay Sachs disease has dysfunctional lysosomes• leads to paralysis, dementia, blindness, and death•Common in Quebeckers, Jews
MITOCHONDRION
• 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
Mitochondria and Aging
CENTROSOME WITH CENTRIOLES
MICROVILLI
flagelli
cillia
CHLOROPLAST
JUNCTIONS BETWEEN CELLS
Tight junction Gap junction
•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.