BIOL 140 Lecture Notes - Microbiology, Toner

31 views2 pages
4 Mar 2013
School
Department
Course
Professor
Fundamentals+of+Microbiology+(Biology+240)+
Course+notes+
Dr.+Josh+D.+Neufeld+
Topic&1:&Microbiology&in&context&
Welcome+to+Biology+240!+
In+this+course,+you+will+be+introduced+to+the+world+of+microorganisms,+learn+how+these+
organisms+are+studied,+and+become+aware+of+the+position,+role+and+importance+of+
microorganisms+in+the+world.+Microbiology+is+a+science+that+is+not+much+more+than+a+
century+old.+It+is+thus+a+young,+vigorous+and+modern+science.+Microbiology+has+had+
profound+influence+on+almost+every+sector+of+human+interest:+health,+agriculture,+food+
and+environment.+It+has+given+rise+to+molecular+biology+and+biotechnology.+Even+if+you+
do+not+plan+to+specialize+in+microbiology,+it+is+important+to+develop+an+understanding+of+
microbiology+and+the+microbial+impact+on+our+lives.++
While+one+of+the+most+important+drivers+for+the+development+of+the+science+of+
microbiology+was+the+recognition+that+many+diseases+are+caused+by+microorganisms,+in+
reality,+only+a+very+small+fraction+of+microorganisms+cause+disease.+In+fact,+for+most+of+
the+time+that+microorganisms+have+existed+on+earth,+there+were+no+multicellular+
organisms+available+to+infect.+The+physiological+activities+of+microorganisms+resulted+in+
the+formation+of+a+“biosphere”,+that+allowed+some+of+them+to+evolve+into+multicellular+
organisms.+Even+today,+microorganisms+comprise+>50%+of+the+Earth’s+biomass.+The+
overwhelming+majority+of+these+microorganisms+are+"friendly".++
Microorganisms+have+been+very+important+as+model+systems+in+the+study+of+
biochemistry+and+genetics.+Most+of+the+fundamental+biochemical+and+genetic+principles+
of+life+were+developed+through+the+study+of+microorganisms.+Microbial+cells+can+be+
cultured+to+high+densities+in+the+laboratory,+facilitating+biochemical+analysis,+and+they+
are+easy+to+manipulate+genetically.++
Although+microbial+cells+do+not+differentiate+into+distinct+tissues,+as+multicellular+
organisms+do,+they+do+associate+with+other+similar+cells+as+populations.+These+
populations+associate+with+other+populations+in+communities.+Interactions+within+
microbial+communities+occur+at+several+levels,+with+waste+products+of+some+organisms+
provided+as+nutrient+for+other+organisms.+In+the+process,+the+properties+of+a+given+
ecosystem+are+often+altered.++
Microorganisms+have+fascinated+me+since+I+was+first+introduced+to+their+world+as+an+
undergraduate+student.+I+am+looking+forward+to+sharing+some+of+the+wonders+of+this+
world+with+you.+I+hope+that+you+enjoy+the+course.++
+
There+are+a+few+things+I+would+like+to+point+out+at+the+beginning+of+this+course:+
1.+For+all+matters+pertaining+to+Biol+240L,+please+contact+Dr.+Cheryl+Duxbury.++
Unlock document

This preview shows half of the first page of the document.
Unlock all 2 pages and 3 million more documents.

Already have an account? Log in

Document Summary

Topic 1: microbiology in context. Microbiology is a science that is not much more than a century old. It is thus a young, vigorous and modern science. Microbiology has had profound influence on almost every sector of human interest: health, agriculture, food and environment. It has given rise to molecular biology and biotechnology. In fact, for most of the time that microorganisms have existed on earth, there were no multicellular organisms available to infect. Even today, microorganisms comprise >50% of the earth"s biomass. The overwhelming majority of these microorganisms are friendly. Microorganisms have been very important as model systems in the study of biochemistry and genetics. Most of the fundamental biochemical and genetic principles of life were developed through the study of microorganisms. Microbial cells can be cultured to high densities in the laboratory, facilitating biochemical analysis, and they are easy to manipulate genetically. These populations associate with other populations in communities.

Get access

Grade+
$10 USD/m
Billed $120 USD annually
Homework Help
Class Notes
Textbook Notes
40 Verified Answers
Study Guides
Booster Classes
Class+
$8 USD/m
Billed $96 USD annually
Homework Help
Class Notes
Textbook Notes
30 Verified Answers
Study Guides
Booster Classes