BLG 10A/B Lecture Notes - Lecture 3: Resting Potential, Cell Membrane, Lipid Bilayer

• School: Ryerson University
• Department: Biology
• Course: BLG 10A/B
• Professor: Emily Agard

Document Summary

Chapter 3: cells the living units: cell = basic structural and functional unit of life, have diverse shapes and functions (fig. 3. 1) but all contain the same basic components (fig. 3. 2): plasma membrane, cytoplasm with organelles, nucleus, plasma membrane (fig. 3. 7) substances move following their concentration gradient relies on kinetic energy (brownian movement random, high speed movement) of molecules. Active transport: uses carrier proteins that bind specific substances and consumes energy to pump these substances against the concentration gradient. 3. 13) = secretory vesicles merge with membrane to eject substances from cells: often triggered by surface signal and used for hormone secretion, neurotransmitter release, protein secretion, dock at specific regions of membrane through use of snare proteins. Cell adhesion molecules (cams) = glycoproteins (cadherins and integrins) (cid:396)ole i(cid:374) e(cid:373)(cid:271)(cid:396)yo(cid:374)i(cid:272) de(cid:448)elop(cid:373)e(cid:374)t, i(cid:373)(cid:373)u(cid:374)ity (cid:894)(cid:396)e(cid:272)og(cid:374)izi(cid:374)g (cid:862)self(cid:863) (cid:448)e(cid:396)sus (cid:862) (cid:374)on-self(cid:863)(cid:895), a(cid:272)t as (cid:373)e(cid:272)ha(cid:374)i(cid:272)al sensors that respond to changes in location tension or shear stress, form attachments between cells.