01:119:131 Chapter Notes - Chapter 4: Mitosis, Pilin, Outer Core
Document Summary
Chapter 4: characterics of prokaryotic and eukaryotic cells: basic cell types, prokaryotic cells: lack a nucleus and other membrane-enclosed structures. Single-celled organisms i: all are bacteria, dna is in a nuclear region not surrounded by a membrane, eukaryotic cells: have a nucleus and membrane-enclosed structures. Include plants, animals, fungi, protists i: dna is in a nucleus surrounded by a membranous nuclear envelope, have structures called organelles that are surrounded by one or more membranes, similarities between prokaryotes and eukaryotes. Surrounded by a cell membrane/plasma membrane i: encode genetic information in dna molecules, prokaryotic cells, three domains exist (2 prokaryotic, 1 eukaryotic, archaea (archaeobacteria, bacteria (eubacteria, eukarya, size, shape, and arrangement i. In most gram-positive organisms, the third amino acid is lysine. In most gram-negative organisms, the third amino acid is diaminopimelic acid. The outer surface of the outer membrane has surface antigens and f. receptors: lipopolysaccharide (lps): also called endotoxin, can be used to identify gram-negative bacteria.