BIOL 4014 Microbiology Fall 2006
Mon & Wed, Lecture 8 am – 9:40 am, LSW 444;
Lab 9:00-10:50 am or 3:00-4:50 pm, LSW 546
Instructor: Dr. David F. Gilmore
Office: LSE 418
Phone 972-3263
Email: dgilmore@astate.edu
Web: http://www.clt.astate.edu/dgilmore
Tentative Office hours: Tues & Fri 9-11 and Wed 1:30-2:30;
other times by appt. or just drop by.
Text: Microbiology, 2nd ed by R. Bauman.
Lab text: Microbiology Laboratory Theory and Application 2nd ed by
Leboffe and Pierce.
1
Integrated Lab/Lecture course
•Match up of lecture topics and Lab exercises
•Additional time for discussion of lecture material, lecture exams.
•Avoid “is this lab or lecture?” thinking.
Powerpoint lectures
•Each slide numbered for your reference
•Listen to ME, take smart notes
•Powerpoints will be posted before class, but attendance is expected!
Stuff
•Schedules may change, more likely in lab
•Alteration in points for Lab assignments
•Don’t be a stranger.
•Please no cell phone use or ringing in class.
2
Grading
•Four regular exams, 100 points each
•Final (fifth) Exam, 100 points.
•Attendance in lecture: 50 points.
•Lab assignments totaling 450 points
•Two Lab Reports
•Lab midterm exam
•One Lab Final
•One Unknown identification
•Total 1000 points
Student email, my web page
Student ID numbers
Cheating
Roll call/ about attendance
3
Microbiology: Definitions
• Chapter 1 in text
• Microbiology: study of living things too small to be
seen w/o a microscope.
– What’s life?
• Highly organized, self replicating, self-adjusting,
capable of evolving, can obtain energy
– Are all microbes that small?
• Epulopiscium and Thiomargarita: visibly large
bacteria
4
Classification of Microbes
• Three domains
– Eubacteria: prokaryotic cell structure
– Archaebacteria: prokaryotes, but different
– Eukaryotes: 4 kingdoms
• Plants, animals, fungi, and protists.
• What are microbiologists interested in?
–
–
–
–
–
Eubacteria and archaebacteria for sure.
Eukaryotes like fungi and protists
Animals (parasitic worms) but not really plants.
What’s missing?
VIRUSES!
5
Divisions of Microbiology
6
• By critter type:
– Bacteriology, virology, mycology
– Parasitology (includes protozoa, fungi, worms)
• Other divisions:
– Pathogenic microbiology, Immunology, molecular
biology, microbial ecology
– Applied microbiology: water treatment, natural products,
food microbiology, environmental microbiology
History: Ancient knowledge
7
• Recognition of Immunity:
– Variolation and protection from infection
• Intentional contact with minor form of smallpox
– Edward Jenner and cowpox
• Milkmaids catch cowpox, seem to be immune to
smallpox.
• Contagion: disease can be spread by contact.
• Exclusion of lepers; burning of plague victims
• Catapulting of disease victims into castles during siege
Satire on Jenner and vaccination
encarta.msn.com/.../ Vaccination_with_Cowpox.html
8
History continued
• Microbiology as a biological science
– Robert Hooke, 1665, discovery of cells
– Antony van Leeuwenhoek, father of microbiology
• Dutch amateur lens grinder
• First person to see microbes, late 1600s
– Mid 1800s, microbes taken more seriously and studied
using the scientific method
micro.magnet.fsu.edu/.../ introduction.html
9
History: the Golden Age
10
• From about 1850 to start of 20th century
– Pasteur lays to rest the idea of spontaneous generation
– Pasteur shows fermentation associated with life
• Prevents unwanted fermentation by Pasteurization
• Saves the French wine industry
– Germ theory of disease: sicknesses caused by microbes
– Robert Koch: lab techniques like agar, staining
• Koch’s postulates: how to link a microbe w/ a disease.
– Semmelweis and handwashing
– Lister and aseptic surgery
– Ehrlich and antimicrobials
20th
Century Microbiology
• Molecular biology
• Use of microbes as model systems for study
• Study of DNA, proteins synthesis
• Tools and processes for recombinant DNA
• Applied microbiology
• Food industry
• Water and sewage treatment
• Bioremediation
• Medicine
– Emerging diseases; antibiotic resistance
11
Why Study Microbes?
Major impact on health
•Responsible for disease in humans, animals, plants
•Major impact on environment
•Major decomposers
•Nutrient cycling, elemental cycling
•Microbes are talented
•Live under extreme conditions
•Protect against disease
•Eat oil, toxic waste (bioremediation)
•Make plastic
•Spoil food, make food
•Use light, produce light
12