Practice Questions & Related Exam 1 Material Flashcards
(28 cards)
Which of the following is NOT a domain in the three domain system?
Animalia
What are the 3 domains?
Archaea, Bacteria, Eukarya
Which of the following is a scientific name of an organism?
italics Streptococcus pyogenes
What is the system of scientific nomenclature that uses a genus and species epithet?
Linnaeus introduced the binomial system where each organism has two names (genus and species epithet), italics or underlined, Genus capital letter and species in lower case)
Which of the following pairs is mismatched?
Koch-Aseptic surgery
Robert Koch’s Postulates
The microbe must always be present in every case of the disease
It must be isolated in pure culture on artificial media
When inoculated into healthy animal host it should produce the same disease
It must be isolated form the diseased animal again
Germ Theory of Disease
In 1876 Robert Koch provided proof that a bacterium causes anthrax using experimental steps called Koch’s Postulates
1st to use agar as solid culture medium in bacti
Aseptics and Handwashing
In the 1860’s, Joseph Lister used carbolic acid, a chemical antiseptic to prevent surgical would infections.
What is true of viruses?
- They are not composed of cells
- They cannot metabolize nutrients
- They cannot reproduce themselves
- They have DNA or RNA
What is NOT true of protozoa?
They have rigid cell walls
What is TRUE of protozoa?
- All are eukaryotic (membrane bound nucleus and organelles)
- All are unicellular
- All have complex cells w/ their methods of locomotion (pseudopod, cilia, flagella)
- Mostly saprobes and commensals
We study microorganisms for many reasons, EXCEPT?
They are invisible to the naked eye
The most commonly used microscope in the microbiology lab is?
Compound light microscope
This microscope does NOT use light:
Electron microscope
What is the total magnification of a chloroplast viewed with 10x ocular lens and a 40x objective lens?
The appearance of gram-neg bacteria after completely the gram stain:
Red
What is the total magnification of a chloroplast viewed with a 10x ocular lens and 40x objective lens?
400x
Bacteria can be which of the following shapes?
Bacillus, Spirilla, Coccus
Identify lipopolysaccharides on a diagram:
Lipopolysaccharides (LPS) screenshot in photo album (green structures)
What is NOT true regarding anaerobic respiration?
It only involves glycolysis
What is true regarding anaerobic respiration?
- It involves the Krebs cycle
- It. Involves the reduction of nitrate
- It generates ATP
- It involves the electron transport chain
Anaerobic Respiration & Fermentation:
Only partially breaks down glucose, into pyruvic acid and organic waste products and a little bit of atp
Aerobic respiration differs from anaerobic respiration in which of the aspect?
The final electron acceptors are different
The term facultative anaerobe refers to an organism that:
