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Transports Process, image, image, image - Coggle Diagram
Transports Process
Diffusion, Osmosis, and Active Transport
Diffusion
Simplest Method of Material Transport Across Membranes
Osmosis
Diffusion Through a Membrane
Free Permeable
Allow all Solutes to Pass Through
Completely Impermeable
Membrane do not Allow Anything to Pass Through
Differentially Permeable
Allow Only Specific Substances to Pass Through
Selectively Permeable
Aquaporins
Protein Channels that Allows Water to Pass Membranes Rapidly
Molecular Pumps
Uses ATP to Force Molecules Across Membrane
Active Transport
Using Energy to Pump Substances Across Membranes
Intracellular Transport
Vesicles Migrate Through Cytoplasm and Fuse w/ Organelles
Long Distance Transport : Phloem
Pressure Flow Hypothesis
Membrane bound molecular pumps and active transport pump substances through phloem
Sources
Sites from which water and nutrients are transported
Polymer Trap Mechanism
Cells are Permeable to Monosaccharides and Disaccharides but not Polysaccharides
STM / CC Complex
Functional unit consisting of both conducting cells and companion cells
Mass Transfer
Actual amount of of sugars and other nutrients transported by phloem per hour
Specific Mass Transfer
Mass Transfer / cross sectional phloem
Sinks
Sites that receive transported phloem sap , extremely diverse
Callose
Polymer within Uninjured phloem
Water Potential
Chemical Potential of Water
Pressure Potential
The Effect that Pressure has on Water Potential
Megapascals or Bars
Measurement used to Describe Potential in units of Pressure
Osmotic Pressure
The Effect that Solutes Have on Water Potential
Matric Potential
Water's Adhesion to Nondisolved Structures Such as Cell Walls
Long Distance Transport : Xylem
Properties of Water
Cohesive
By any force acting on one molecule acts on all
Adhesive
Molecules interact with other substances
Water Transport Through Xylem
Cohesion - Tension Transport
Most Widely accepted model of process
Transstomatal Transpiration
Water Loss
Transcuticular Transpiration
Water loss through cuticle
