BIO SCI 94 Lecture Notes - Lecture 8: Archaea, Microorganism, Mucus

• School: UC-Irvine
• Department: Biological Sciences
• Course: BIO SCI 94
• Professor: Robin Bush

Document Summary

Types of molecules that make up their plasma membranes and cell walls. Machinery they use to transcribe dna and translate mrna into proteins. Marine archaea can be found at concentrations of over 10,000 individuals per milliliter of seawater. Only 5000 specis of bacteria and archaea have been named and described. Over 1000 species live in the human large intestine. Approximately 700 species live in the human mouth. Culture conditions: bacteria did not grow when put in petri dishes. Archaea were not discovered until the late 1970s. Bacteria that causes disease are said to be pathogenic. Only a tiny fraction of the bacterial species living on and in the human body are pathogenic. Pathogenic bacteria tend to affect tissues at the body"s entry points. Bacterial and archaeal cells living in and on the human body outnumber human cells ten to one. Koch"s experimental results were the first test of the germ theory of disease.