Cell Biology Overview  Introduction / Cell Theory  Microscopes  Cell Membranes  Energy Conversion  Cell Growth and Division  Cell Motions  Cell.

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Presentation transcript:

Cell Biology Overview  Introduction / Cell Theory  Microscopes  Cell Membranes  Energy Conversion  Cell Growth and Division  Cell Motions  Cell Organization / Protein Synthesis  Cell Specialization

Cell Membranes Amoeba moving Cells Dividing

The Cell Membrane’s role? Flexible Boundary Access Control Platform for cell recognition communication Cell Membrane Roles

What makes these roles possible? Flexible Boundary Controls access Platform for cell adhesion cell adhesion cell recognition cell recognition cell communication cell communication Cell Membrane Building Blocks Phospholipids Cholesterol Proteins Glycoproteins Glycolipids

Cell Membrane Structure the fluid mosaic model Fluid Mosaic Model

Phospholipids and Cholesterol

Access Control Flexible Boundary Access Control Platform for cell adhesion cell adhesion cell recognition cell recognition cell communication cell communication Cell Membrane Building Blocks Phospholipids Cholesterol Proteins Glycoproteins Glycolipids

What gets across? What does not? ? ?

Diffusion – the natural motion

Osmosis – Water and Semipermeable Membranes

Transport across the Membrane – Protein Channels Facilitated, Passive Transport Active Transport

Facilitated Passive Transport

Active Transport

Large Particle Transport- Exo- and Endo- Cytosis

Cell Adhesion, Recognition and Communication Flexible Boundary Access Control Platform for cell adhesion cell adhesion cell recognition cell recognition cell communication cell communication Cell Membrane Building Blocks Phospholipids Cholesterol Proteins Glycoproteins Glycolipids

Glycoproteins and Glycolipids Cell-cell recognition Cell-cell adhesion Cell signaling Cell-cell recognition

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