Makomed's Weblog

Cell Physiology

Posted on: May 30, 2005

HERE’S A QUICK REFERENCE for GENERAL CELL PHYSIOLOGY

CELL MEMBRANE: membrane proteins that provide pathways for transportation & regulates flow of materials into & out of cells, or serve as receptors, enzymes, or antigens that indentify individual self.

NUCLEUS: Contains genetic material like genes, DNA, and chromosomes.

CYTOPLASM/CYTOSOL: everything in between nucleus & plasma membrane. Contains membrane, bound organelles, ribosomes, and cytoskeleton. Cytosol contains protein enzymes.

MITOCHONDRIA: “generators” where chemical energy is trapped and stored through formation of ATP molecules.

ENDOPLASMIC RETICULUM: network of tubes & flat sacs. Some ER have “granular” appearance because of ribosomes. These are sites for synthesis of proteins destined for organelles.

GOLGI APPARATUS: smooth & flat like Pancakes! Packages proteins for delivery.

ENDO & EXOCYTIC VESICLES: vehicles traveling to and from plasma membrane that are important for protein delivery.

LYSOSOMES: membrane vesicles that digest cellular products or damaged organelles & bacteria.

PEROXISOMES: membrane vesicles that give cell it’s shape, providing basis for movement or entire cell. Intermediate filaments are strong stable structures which protect from mechanical stress.

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