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- An overgrowth of microbes can decrease dissolved oxygen levels to the point where organisms cannot survive. True or False?The process by which nitrogen gas is converted to a usable form is called nitrogenMatch each of the following terms to their proper description. You may have to use your textbook for this question. Obligate aerobe V [ Choose ] require lower than atmospheric amounts of oxygen don't require oxygen, but aren't negatively affected by it a microaerophile that requires a higher amount of CO2 than usual requires oxygen for respiration Obligate anaerobe grow with or without oxygen any amount of oxygen is lethal Facultative anaerobe [ Choose ] Aerotolerant anaerobe [ Choose ] Microaerophile [ Choose ] Capnophile [ Choose ] > > > >
- An over growth of microbes can decrease dissolved oxygen levels to the point where organisms cannot survive True or false ?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.Oxygen is always beneficial to micro-organisms. Discuss this statement in the context of factors that influence microbial growth.
- The difference between industrial and photochemical smog is that photochemical smog is produced by stationary sources rather than mobile ones contains secondary pollutants formed under the influence of UV radiation from the sun contains carbon dioxide is not related to coal burning involves reactions with oxygenA broth containing 1 million bacterial cells is treated with an antimicrobial agent that kills 90% of the cells in 1 minute. What is the minimum amount of time it will take before all the cells in the broth are dead? 3 minutes 5 minutes 7 minutes 10 minutesBacteria that require an atmosphere strictly of CO2 for growth is called:
- Microorganisms degrade chemicals for the following reason(s): Select one: Obtain source of usable energy To create more microorganisms Biosynthesis of cellular component All sentences are true Two sentences are trueBreakdown of the items in the image can occur through an anaerobic process to generate a renewable, combustible gas. Which term best describes the microbes that perform this: Select one alternative: Bacteria O Halophiles O Algae Methanogens O YeastsIf an organism tests positive for catalase, which of the following is MOST likely true about the organism? It can only do homolactic fermentation It returns nitrogen back to the atmosphere It can break down plasma membranes It creates H2O as a product of respiration