Membrane transport Flashcards
What FAs are found in high concentration in nature?
Palmitic and olenic acid.
What molecules/ions cannot cross the membrane?
Glucose, sucrose, Cl-, K+, Na+
What molecules/ions can move across the membrane freely?
O2, CO2, N2, H2O, indole, glycerol
What proteins are easily removed from the membrane?
Anchored proteins and Peripheral proteins
What proteins are most difficult to removed from the membrane?
Integral proteins
What is a way to study cell membrane movement?
Bleaching…?
What is simple diffusion?
Nonpolar compounds only, down concentration gradient.
What is facilitated diffusion?
Down electrochemical gradient
Primary Active transport
against electrochemical gradient driven by ATP
What is secondary active transport?
against electrochemical gradient, driven by ion moving down its gradient
What is ion channel transport?
down electrochemical gradient; may be gated by a ligand or ion
what is ionophore transportation?
down electrochemical gradient via ion mediation.
What is an example of antiproton?
Sodium potassium ATPase
What is an example of a symport?
Glucose sodium channel
