Microbiology UTA 2460 - Exam 1
Microbiology and Infectious Diseases
1. Origin of Bacteria, Archaea, and Eukaryotes: These life forms arose approximately 2.9 billion years
ago.
2. Non-Cause of Infectious Death Worldwide: Ebola is not ranked among the leading causes of infectious
deaths glo...
Microbiology UTA 2460 - Exam 1
Microbiology and Infectious Diseases
1. Origin of Bacteria, Archaea, and Eukaryotes: These life forms arose approximately 2.9 billion years
ago.
2. Non-Cause of Infectious Death Worldwide: Ebola is not ranked among the leading causes of infectious
deaths globally.
3. Most Infectious Microbes:
- Malaria: Most infectious microbe caused through non-human transmission.
- Measles: Most infectious microbe caused by human-to-human transmission.
4. Eradicated Disease: The only disease that has been eradicated globally is smallpox.
5. Emerging Diseases: Examples include HIV, SARS, and Lassa Fever.
6. Taxonomic Relationships: Species in the same family are more closely related than those in the same
order.
7. First to Use a Microscope: Anton van Leeuwenhoek was the first person to observe living cells using a
microscope.
8. Proper Use of Binomial Nomenclature: The correct way to denote an organism is Escherichia coli
(italicized).
9. Eukaryotic Classification: All of the following are considered eukaryotes except archaea (which are
prokaryotes).
, 10. Bioremediation: Using microbes to detoxify a site contaminated with heavy metals.
11. Helminths: Refers to parasitic worms.
12. Koch's Postulates: Criteria used to establish that a specific microbe causes a specific disease.
13. Sterile Definition: Refers to the absence of any life forms and viral particles.
14. Pasteur's Swan Neck Flask: The curve trapped microbes that would have otherwise entered the flask,
preventing contamination.
### Basic Chemistry Principles
15. Structure of a Nucleotide: A nucleotide consists of one nitrogen base, one phosphate, and one
pentose sugar.
16. Polar Covalent Bond: This bond results from the unequal sharing of electrons between atoms.
17. Hydroxide Ion Concentration at pH 6: The concentration of hydroxide ions [OH⁻] in a solution with
pH 6 is 10⁻⁸ M.
18. Cations: All cations have more protons than electrons.
19. Sodium Chloride (NaCl) in Solutions:
- In pure water: NaCl crystals will dissolve readily.
- In hydrocarbon solution: NaCl crystals will not dissolve.
20. Sulfur Atomic Number and Valence Electrons: Sulfur has an atomic number of 16, with a valence
electron count of 6 (it has 6 electrons in its outer shell).
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