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A microbe causing a bloodstream infection is likely all of the following except
A. A chemotroph
B. A
C. A heterotroph
D. A thermophile
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- Human pathogens are generally which type of microbe?A. barophileB. halophileC. mesophileD. thermophileE. psychrophileWhich of the following is most susceptible to antimicrobial agents? mycobacteria bacterial endospores protozoan cysts vegetative bacteriaAn obligate anaerobe A has the necessary enzymes to process toxic oxygen products B does not require oxygen in its metabolism, but can tolerate its presence . C lacks the enzymes necessary for processing toxic oxygen products. D grows in high pressure environments.
- A microbe that does not require oxygen for metabolism but will use it ifavailable is a/ana. microaerophile.b. facultative anaerobe.c. obligate anaerobe.d. aerotolerant anaerobe.e. obligate aerobe.A microorganism found living under conditions of high ________ is a barophile. carbon dioxide levels hydrostatic pressure salt concentrations oxygen concentrations pH valuesH. pylori grows optimally in an acidic environment, such as the stomach, this organism is a/an barophile. neutrophile. O acidophile. O alkalinophile.
- Bacteria that are obligate intracellular pathogens of humans are considered to be Autotrophs Heterotrophs Photosynthetic Hyperthermophiles Chemolithotrophs Which of the following statements best describes the pathogenesis of Clostridium botulinum? It elaborates an exotoxin that is a lecithinase that causes tissue necrosis. It elaborates a toxin that suppresses the release of inhibitory neurotransmitters. It produces a polysaccharide capsule that inhibits phagocytosis and contributes to invasion of the central nervous system. It elaborates a toxin that inhibits the release of acetylcholine at cholinergic synapses. It produces a leukotoxin that leads to abscess formation.Which of the following groups of microbes is most likely to be associated with humans? A psychrophiles. B thermophiles C hyperthermophiles D mesophiles.Which of the following would be an example of a microbial chemoautotroph? A yeast using oxidation/reduction of organic compounds as the energy source and organic compounds as the carbon source. An archaean using oxidation/reduction of inorganic compounds as the energy source and a organic compounds as the carbon source. A cyanobacterium using light as the energy source and CO2 as the carbon source. A bacterium using oxidation/reduction of inorganic compounds as the energy source and CO2 as the carbon source.
- Name two methods of control of growth for Mycobacterium tuberculosis pathogen in a patient with the disease and when confronted with the pathogen outside of the host. Be careful to specify if it is a physical method or a chemical method (check lecture to differentiate these two). Control of growth means how would you deal with an infection related to a person as well as how would you minimize the presence of the bacteria on a surface or object.Sterility: is achieved by most disinfectants and antiseptics (i.e., chemical agents) O is achieved by soap and water is the absence of PATHOGENS or spoilage-causing microbes ONLY Cannot be achieved by ethylene oxide O CANNOT be achieved by autoclaving O is the absence of ALL living cells and endosporesWhat type of microbe would most likely cause food spoilage in the refrigerator? Othermophile mesophile Opsychrophile psychrotroph