Please enable JavaScript.
Coggle requires JavaScript to display documents.
Bio Topic 2 - Genes and Health (Cell Membranes (Fluid Mosaic Model…
Bio Topic 2 - Genes and Health
Cell Membranes
Fluid Mosaic Model
Structure
Phospholipid Bilayer
Phospholipid Properties
Hydrophilic Head - attracted to water
Hydrophobic Tails - deter water
Made up of phosphate binded to a glycerol molecules which is binded to 2 fatty acid tails
Proteins
Integral Proteins
Peripheral Proteins
DNA Replication
Proteins
Gas Exchange
Efficient
Rate Of Diffusion
Fick's Law
Area of Diffusion Surface x Difference in Concentration / Thickness of Diffusion Surface
Rate x2 if...
Diff in conc. x2
Thickness /2
SA x2
P x A x ((C1-C2)/T)
P = permeability Constant
A = Surface Area
C = Conc
T = thickness
Lung adaptations for efficient gas exchange
Large SA
more surface for gaseous exchange to occur across at one time
Short Diffusion Distance
Both the capillaries and alveolar endothelium are one cell thick - quicker movement of molecules across diffusion surface
good blood supply
capillaries constantly take oxygen and bring co2 maintaining a steep concentration gradient
Protein Synthesis