Question

chapter 1: introduction to microbiology - guided lecture notes - chapter 1
big picture questions

1. most microbes are ______________ rather than harmful.
2. humans first suspected the existence of microbes around ____________ times, based on observations of ____________.
3. the first person to observe unicellular organisms using a microscope was ______________.

classification and taxonomy

1. the scientist responsible for the hierarchical system of nomenclature used in microbiology was ______________.
2. the two - part naming system for organisms is called ______________ nomenclature.
3. the basic taxonomic units used to identify an organism include (list in order from broad to specific): ____________, __________, __________, __________, __________, __________, ____________.
4. taxonomy is defined as the science of ____________ and ____________ organisms.
5. the three domains of life are ____________, __________, and ____________.

early disease prevention and history

1. ancient romans reduced their risk of waterborne disease by ____________ and ____________.
2. thucydides contributed to microbiology by recognizing that ______________ could protect individuals from reinfection.

key contributors to microbiology

1. match the scientist to their contribution:

• robert koch: ______________
• louis pasteur: ______________
• antonie van leeuwenhoek: ______________

Explanation:

1. Most microbes play beneficial roles like nutrient cycling or aiding digestion.
2. Ancient scholars noticed spoilage/fermentation, hinting at unseen organisms.
3. This scientist built simple microscopes to view "animalcules".
4. This scientist established the standardized naming hierarchy for organisms.
5. This two-part system uses genus and species names.
6. Taxonomic ranks progress from the broadest group to the most specific individual organism.
7. Taxonomy encompasses organizing and naming living things consistently.
8. These three domains represent the highest level of biological classification, separating cellular life by key traits.
9. Roman engineering focused on clean water access and waste removal.
10. This early observation laid groundwork for the concept of immunity.
11. Each scientist made a foundational, distinct contribution to microbiology: one proved germ theory, one disproved spontaneous generation, one was the first to observe microbes.

Answer:

1. beneficial
2. 500 BCE; spoilage/fermentation
3. Antonie van Leeuwenhoek
4. Carolus Linnaeus
5. binomial
6. Kingdom, Phylum, Class, Order, Family, Genus, Species
7. classifying; naming
8. Bacteria, Archaea, Eukarya
9. building aqueducts; constructing sewage systems
10. surviving a disease

11.

• Robert Koch: Developed postulates to prove germ theory of disease
• Louis Pasteur: Disproved spontaneous generation and created pasteurization
• Antonie van Leeuwenhoek: First to observe and document live microscopic organisms (animalcules)