Transport Mechanism Flashcards
It refers to the process of moving substances into or out of a cell through the cell membrane.
Transport Mechanism
3 factors that can affect membrane transport
Membrane Permeability
Size and charge of solute
Solute concentration
A disbalance in the distribution of particles of a substance.
Concentration Gradient
Forms due to a difference in solute concentration on different sides of a membrane.
Chemical Gradient
Forms due to a difference in charge on either side of a membrane.
Electrical Gradient
Combines the effects of electrical and chemical gradients to determine the direction that ions will flow across a membrane.
Electrochemical Gradient
For the organism to maintain stability or balance while adjusting that are best for its survival. This processes is also called as
Homeostasis
involves the movement of materials through the cell membrane without the expenditure or use of energy.
Passive Transport
3 types of passive transport
Simple diffusion, Osmosis, and Facilitated diffusion
is when ions or molecules diffuse from an area of high concentration to an area of low concentration.
Simple Diffusion
The movement of molecules with the aid of a transport proteins.
Facilitated Diffusion
is the diffusion of water across the cell membrane.
Osmosis
3 types of solutions
Hypertonic
Hypotonic
Isotonic
The cell shrink and wrinkles
Hypertonic
The cell swells up and burst
Hypotonic
Functioning cell of normal size
Isotonic
involves the movement of materials through the cell membrane that requires the use of energy.
Active Transport
Molecules move against the concentration gradient (LOW AND HIGH CONCENNTRATION).
Active Transport
3 types of active transport
Primary, Secondary, and Bulk Transport
Uses energy usually in the form of Adenosine Triphosphate (ATP).
Primary Active Transport
Uses Potential Energy often from electrochemical potential difference as ions are pumped
Secondary Active Transport
two molecules in the same direction across a membrane.
Symporter
two molecules in opposite directions across a membrane.
Antiporter
It moves large quantities of substances across cell membranes.
Bulk Transport
Process by which a cell membrane invaginates and forms a pocket around a cluster of molecules.
Endocytosis
Cell eating
Phagocytosis
Cell drinking
Pinocytosis
Process that moves large molecules and waste out of a cell.
Exocytosis
process by which cells absorb metabolites, hormones, proteins by the inward budding of the plasma membrane.
Receptor-mediated endocytosis
will act as a channels or pores for the substance/molecules to enter and exit the cell.
Proteins
_________ in form of concentration gradient
Kinetic Energy
meaning to spread out
Diffusion
the cell needs to have balance or dynamic equilibrium
Diffusion
