BIOLOGY 2B03 Lecture Notes - Lecture 1: Emergence, Nuclear Membrane, Transfer Dna

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 2B03
• Professor: Suleiman A Igdoura

Document Summary

Individual cells can grow, reproduce, process information, respond to stimuli, communicate, carry out chemical reactions. Classification of living organisms: eukaryotes or prokaryotes: prokaryotes, single-celled bacteria and cyanobacteria, cell or organism lacking a membrane-bound structurally discrete nucleus, eukaryotes, these comprise all multicellular plants and animals, fungi (multicellular molds and unicellular yeast, protozoans (unicellular) Fundamental differences: prokaryotes, dna is in the overall cell, cell or organism lacking a membrane-bound structurally discrete nucleus and other. Lack a nuclear membrane subcellular compartments: eukaryotes, dna in a compartment in the cell, cell containing a membrane-bound nucleus that carries most of the genetic information (chromosomes) and a wide-array of membrane-bound organelles that perform discrete functions. Eukaryotic cells have a complex internal organization: eukaryotes contain a membrane-bound nucleus containing (most of) the genetic material of the cell; (-eu true; karyon - nucleus, activities are compartmentalized; an extensive internal membrane enclose various compartments. = organelles: eukaryotic cells are generally larger and much more complex than prokaryotic cells.