![]() an aerotolerant anaerobe It is a capnophile. The bacterium is probably which of the following?ĭ. It resides in the gum pockets, does not have catalase activity, and can be grown outside of an anaerobic chamber. a facultative anaerobe aerotolerant anaerobe Streptococcus mutans is a major cause of cavities. It does not grow in the absence of oxygen. an obligate aerobe Pseudomonas aeruginosa is a common pathogen that infects the airways of patients with cystic fibrosis. An inoculated thioglycolate medium culture tube is clear throughout the tube except for dense growth at the bottom of the tube. ![]() The organisms should be grown in an anaerobic chamber.ĭ. The organisms are facultative anaerobes.Ĭ. The organisms die in the presence of oxygenī. An inoculated thioglycolate medium culture tube shows dense growth at the surface and turbidity throughout the rest of the tube. Death phase Number of dying cells is higher than the number of cells dividing is what phase? Stationary phase Number of new cells equal to number of dying cells is what phase? Lag Phase New enzymes to use available nutrients are induced is what phase? Log Phase Binary fission is occurring at maximum rate in what phase? The organisms are facultative anaerobes. ATPĪcid from fermentation Active growth of a culture may be estimated indirectly by measuring the following products of cell metabolism: _ or _. Turbidity For this indirect method of estimating the growth of a culture, you measure _ using a spectrophotometer. Most probable number A statistical estimate of the number of live cells in a liquid is usually done by _. Plate Count The _ method allows direct count of total cells growing on solid medium. Petroff-Hausser counting chamber Direct count of total cells can be performed using a _ or a _.
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