BILD 1 Lecture Notes - Lecture 13: Sickle-Cell Disease, Bild, Cell Membrane

• School: UCSD
• Department: Biology/Lower Division
• Course: BILD 1
• Professor: Stephanie Mel

Document Summary

Saturated = only single bonds, solid at room temperature. Because the double bond causes kinks that prevent the fatty acids to stack perfectly on top of each other. They do majority of the reactions, signaling, and functions of the cell. Proteins can be synthesized on the er or in the cytoplasm. Hemoglobin: found in red blood cells that transport oxygen through the body. Saturated tails: tightly packed together -> less fluid. Unsaturated tails: loosely packed together -> more fluid. Cholesterol: resists too much change in fluidity with temperature changes: coli. Able to change saturated/unsaturated tails ratio to adapt to environment. Demonstrates how membrane proteins move in the bilayer. Mouse cell + human cell (membrane proteins) -> hybrid cell -> mixed proteins after 1 hour. Net movement of particles from higher -> lower concentration. Diffusion of free fluids across a semipermeable membrane. Ability of a solution surrounding a cell to cause the cell to gain/lose water.