Physiology 2130 Study Guide - Electrochemical Gradient, Lipid Bilayer, Membrane Transport Protein

• School: Western University
• Department: Physiology
• Course: Physiology 2130
• Professor: Anita Woods

Document Summary

No exam questions based on cell organelles: golgi packaging and production of secretory vesicles and storage vesicles (lysosomes, er site for the production, transport and storage of lipid molecules and proteins. Rer proteins; ser- lipids: nucleolus contains the dna that produces the rna found in ribosomes. Antigens or glycoproteins antigens are foreign particles that can stimulate the immune system. Membrane transport: endocytosis/exocytosis through vesicles (pinocytosis for small molecules, diffusion through the lipid bilayer (fat soluble molecules) Pores are quite specific and will generally allow only one type of ion through. The greater the electrochemical gradient of a molecule, the greater its rate of movement through channels. Differs from regular diffusion because is limited by the number of available proteins- when all carriers occupied and working, becomes saturated and can no longer operate any faster. The speed that the carrier can change shape/configuration is limited. Uses energy move molecules up their gradient ex.