Lecture 1: Intro to Microbiology

Question 1

What is microbiology?

Answer 1

the study of microrganisms

Question 2

what is the miasma theory?

Answer 2

infectious diseases were caused by bad air and emitted by rotting organic matter

Question 3

what is the spontaneous generation theory?

Answer 3

living organisms arise from non-living matter

Question 4

why was Louis Pasteurs contribution important?

Answer 4

because it disproves the spontaneous generation theory

Question 5

who created the swan neck experiment?

Answer 5

Louis Pasteur

Question 6

what are the 4 steps of the swan neck experiment?

Answer 6

1. non-sterile liquid poured into flask
2. liquid is sterilized by heat
3. flask neck is contaminated
4. liquid remains sterile indefinitely

Question 7

What is the germ theory of disease?

Answer 7

microbes are the cause of infectious diseases

Question 8

what theory is the opposite of the miasma theory?

Answer 8

the germ theory of disease

Question 9

who developed the germ theory of disease?

Answer 9

Robert Koch

Question 10

what did Robert Koch find from his postulates?

Answer 10

evidence that bacteria causes diseases (NOT viruses)

Question 11

What are the 4 steps of Koch’s postulates?

Answer 11

1. use dead rat with disease to observe pathogens
2. collect bacteria culture
3. inject healthy rat with pathogen
4. bacteria culture will be the same

Question 12

what transformed the earth’s atmosphere?

Answer 12

Cyanobacteria

Question 13

what does Cyanobacteria mean?

Answer 13

oxygen producing

Question 14

when & how did bacteria & archaea start?

Answer 14

3.8 billion years ago due to symbiotic relations