Cytoplasm Cytoskeleton Nucleus Nucleolus Ribosomes Rough E.R. Smooth E.R. Plasma Membrane Golgi...
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Transcript of Cytoplasm Cytoskeleton Nucleus Nucleolus Ribosomes Rough E.R. Smooth E.R. Plasma Membrane Golgi...
Cytoplasm
Cytoskeleton
NucleusNucleolus
Ribosomes
Rough E.R.
Smooth E.R.
Plasma Membrane
Golgi Apparatus
Mitochondria
Vacuole
Lysosome
Plasma Membrane
The Plasma Membrane of cells are made up of a PHOSPHOLIPID BILAYER
Hydrophilic Head
Hydrophobic Tails
“water-loving”
“water-fearing”
PHOSPHOLIPID
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
___IN___Nutrients- sugars (glucose)- proteins- fatsSaltsO2
H2O
___OUT___Waste- ammonia- salts- CO2
Products- Proteins
H2O
INSID
EO
UTSID
E• Uncharged smaller particles can pass through the
membrane• Charged particles (+/-) or large particles cannot
LIPIDS O2CO2
SALT+/-
WASTES
STARCH GLUCOSE
Large and/or charged particles must use Transport Proteins or Protein Channels to pass through the plasma membrane
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
Sometimes, transport needs to occur AGAINST the Concentration Gradient
Example: Glucose
Cells must use ACTIVE TRANSPORT to go against the gradient
Active Transport uses ATP Energy to push materials from LOW to HIGH concentration
Simple Diffusion
Facilitated Diffusion
Passiv
e
Tran
sp
ort
Active Transport
https://www.youtube.com/watch?v=prfMUwjobo8
How does endocytosis and exocytosis work?
https://www.youtube.com/watch?v=XdCrZm_JAp0