Transport Mechanism in Cells Flashcards
Obtains needed materials from the outside environment for survival
Movement of materials in cell
2 major ways of transportation
Passive and active transport
Involves the movement of materials through the cell membrane without the expenditure or use of energy or use of energy
Passive transport
Equal distribution of solute and solvent and diffuse automatically
Simple diffusion
Salt molecule and water molecule diffuses across the cell membrane depending on the amount of dissolved substances or solute concentration of the solution surrounding a cell
Osmosis
3 classification of Osmosis. Explain.
Hypotonic solution - lolobo or lalaki
Isotonic solution - normal or shribbled
Hypertonic solution - pumapayat because of too much secretion
Glucose and steroid hormones may be too large to penetrate the membrane, which requires the help of protein carriers
Facilitated diffusion
Involves expenditure of energy. Goes frim low concentration are to a high one.
Active transport
Active transport imports by ______ and exports by _______
Endocytosis and exocytosis
Pocket pinches off and forms vesicle that transports molecules into the cell
Endocytosis
Cell eating or takes large food particles
Phagocytosis
Cell drinking or absorbs small particles outside to inside
Pinocytosis
Mediated endocytosis, absorbs matabolites, hormones,bproteins by the inward bounding
Receptor
Expell waste materials into the extracellular space
Exocytosis
Higher rate molecules go down concentration gradient faster
Concentration
