cytoplasm cytoskeleton nucleus nucleolus ribosomes rough e.r. smooth e.r. plasma membrane golgi...
TRANSCRIPT
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Cytoplasm
Cytoskeleton
NucleusNucleolus
Ribosomes
Rough E.R.
Smooth E.R.
Plasma Membrane
Golgi Apparatus
Mitochondria
Vacuole
Lysosome
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Plasma Membrane
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The Plasma Membrane of cells are made up of a PHOSPHOLIPID BILAYER
Hydrophilic Head
Hydrophobic Tails
“water-loving”
“water-fearing”
PHOSPHOLIPID
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The Plasma Membrane of cells also have
PROTEINS and CHOLESTEROL• Help movement
across the membrane
• Detect materials outside the cell
• Help keep the membrane fluid and wavy
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___IN___Nutrients- sugars (glucose)- proteins- fatsSaltsO2
H2O
___OUT___Waste- ammonia- salts- CO2
Products- Proteins
H2O
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INSID
EO
UTSID
E• Uncharged smaller particles can pass through the
membrane• Charged particles (+/-) or large particles cannot
LIPIDS O2CO2
SALT+/-
WASTES
STARCH GLUCOSE
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Large and/or charged particles must use Transport Proteins or Protein Channels to pass through the plasma membrane
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Simple Diffusion vs. Facilitated Diffusion
• Move from HIGH to LOW through a transport protein
• Move from HIGH to LOW directly through the lipid bilayer
Passive Transport: diffusion occurs down the Concentration Gradient
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Sometimes, transport needs to occur AGAINST the Concentration Gradient
Example: Glucose
Cells must use ACTIVE TRANSPORT to go against the gradient
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Active Transport uses ATP Energy to push materials from LOW to HIGH concentration
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Simple Diffusion
Facilitated Diffusion
Passiv
e
Tran
sp
ort
Active Transport
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https://www.youtube.com/watch?v=prfMUwjobo8
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How does endocytosis and exocytosis work?
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https://www.youtube.com/watch?v=XdCrZm_JAp0