CH1131_Biomolecular Engineering_week 3_Cell Growth and Cytoskeleton_Aug 28 31 2017 (1).pdf

CH1131_Biomolecular Engineering_week 3_Cell Growth and Cytoskeleton_Aug 28 31 2017 (1).pdf

Info icon This preview shows pages 1–13. Sign up to view the full content.

View Full Document Right Arrow Icon
CH1131 Biomolecular Engineering Week 3 (Aug 28 and 31) Organelles, Cell Growth and Cytoskeleton 1
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Learning Objectives Organelles Cell Growth Cytoskeleton 2
Image of page 2
Plasma Membrane - Structure Lipid bilayer (including cholesterol) Glycoproteins Transmembrane structural proteins Transmembrane channels 3
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Plasma Membrane - Functions Compartmentalization continuous enclosure for specific activities Barrier protects cellular components but is permeable Transport machinery for two-way traffic of substances Response receptor linked signaling cascade in response to external stimuli Interaction intercellular recognition, cell- substrate adhesion 4
Image of page 4
Plasma Membrane - Composition Membrane - lipid-protein assembly held by noncovalent bonds Membrane Lipids polarized bilayer (outside hydrophilic) Membrane Lipids mostly phospholipids (except cholesterol) Overall Composition Phospholipids in Membrane 5
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Plasma Membrane - Fluidity Provides compromise between rigid structure and fluid liquid Allows movement of membrane proteins for specific activities Allows growth of membrane with new components Allows coordinated movement of cells 6
Image of page 6