BIO SCI 93 Lecture Notes - Lecture 5: Glycolipid, Mitochondrion, Amphiphile

• School: UC-Irvine
• Department: Biological Sciences
• Course: BIO SCI 93
• Professor: Busciglio/ Wood/ Green

Document Summary

Engulfs smaller object after small object away. Fluid object = phagocytic cell (white blood cell) Single eukaryotic and prokaryotic cells are capable of non random, directed movement. White blood cell can recognize the bacteria and distinguish it from other cell types. Light microscopy allows to bacteria only engulfs certain cells. Glycoproteins and glycolipids: cell recognition energy for movement. Cytoskeleton: part of cell shape to allow movement. Lysosomes: allows white blood cell to digest the external particle see live specimens and movement. A white blood cell extending pseudopodia (false arms) that make contact with bacteria. Lipids: phospholipids (amphiphile or amphipathic molecule), main fabric of membrane that form the bilayer; cholesterol (regulates membrane fluidity) Also glycoproteins and glycolipids (have sugar residues; important for cell interaction/recognition) Phospholipids drift laterally in the plane of the membrane. It is difficult for a hydrophilic head to travel through the hydrophobic membrane. They are held together by weak hydrophobic interactions.