BIOL 1010 Study Guide - Comprehensive Final Exam Guide - Protein, Dna, Gene
Document Summary
The plasma membrane is a boundary that separates the living cell from its surroundings. A membrane is only 8nm thick and exhibits selective permeability. Integral proteins penetrate into the hydrophobic region of the lipid bilayer: peripheral proteins are on the surface of the bilayer (not embedded, these proteins are asymmetrical, functions, hormone-binding sites. Immobilized enzymes: cell adhesion, cell-to-cell communication, transport, carbohydrates, glycolipids and glycoproteins. K: pump is open on cytoplasm side. Ion gradients: atp participates indirectly, amino acids and sugars, co-transport. Bulk transport: endocytosis (receptor-mediated, phagocytosis, pinocytosis, exocytosis. In 1855, rudolf virchow (a german doctor) added the last part of the cell theory: Cells can only arise by division from a pre-existing cell. Genome total of the entire dna in a cell. Dna is organized as chromatin inside the nucleus. The total length of dna in your body would be able to go to the sun and back.
