Chapter 1 Flashcards
Are most microbes pathogenic?
No, but some can cause diseases.
1673 first discovered by Antoni Von Leeuwenhoek
What positive and negative roles to microbes (especially bacteria) have on Earth?
Generate solution, textile production, help with digestion, clean pollution.
Negative causes diseases, food to spoil
What are the basic differences which distinguish groups of microorganisms (bacteria, Achaea, fungi, viruses, parasites, etc.)?
Bacteria: cell wall with peptidoglycan, no nucleus
Achaea: no peptidoglycan, live in extreme conditions.
Fungi: can be both multicellular (when mold) and unicellular.
Viruses: need a host in order to reproduce.
Parasites: derives its nutrients from a living host.
What is the appropriate way to write the genus and specific epithet of an organism?
The genus gets a capital letter ex. E. coli.
What are the three domains?
Bacteria, Achaea, and Eukarya
What is cell theory?
All living things are composed of cells
What is biogenesis?
That all living organisms arrive from preexisting life. 1858
What spontaneous generation?
Who disproved this theory and how?
The hypotheses that living organisms arrive from other living matter
Louis Pasteur 1861 demonstrating that microbes exist in the air, used an S shaped flask which kept microbes out and letting air in disproving the theory.
