BI236 Lecture Notes - Lecture 2: Cyanobacteria, Ribosomal Rna, Paramecium
Document Summary
The cell theory: describing what a cell is and their function (theories can be changed*- not principles or laws, very general: 1. one or more cells- cells always come from preexisting cells (come from parent cells, 2. Vital functions- like metabolic process (reproduction, growth, exertion: 3. Have hereditary info- regulates cell function: 4. Cell size: certain cells, can be large enough to see without a microscope, more than 0. 1mm- we can see it with our eyes (without a microscope, examples- ameoba proteus, a human egg and a paramecium. A changing view of prokaryotes: the basis for dividing archaea and true bacteria rrna= ribosomal rna. Cell and molecular biology lecture 1: look at the gene that makes the rrna and found there is a huge difference between bacteria and archaea trhough rrna sequence analysis, 3 domains*** Cyanobacteria group of bacteria which can photosynethsize: bacillus- rod, coccus- round. Live in extreme environments- high temp, high salt and high acid.
