Exam 18: Bacterial Diversity

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In order to learn what makes proteins stable in thermophilic bacteria, how should the amino acids or motifs that are involved in conferring thermostability to proteins be explored?

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Describe the cell wall of Verrucomicrobia. How could these organisms have acquired this trait?

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Discuss the chemical nature of mycolic acids and some of the traits they confer to organisms that possess them.

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The ________ lack cell walls and have a double membrane around the nucleoid; their tolerance for low concentrations of nutrients is called ________.

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What is unique about the genome of Borrelia species?

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Clades of microbes that are recently defined or characterized are referred to as

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Bacteria are widely diverse in their cell structure, metabolism, and ecological adaptations, but share some major common traits. Which of the following statements is NOT true?

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How do Bacteroides fragilis and B. thetaiotaomicron contribute to 15% of human caloric intake? Are there other benefits provided by these microbes to human health? Are they potentially pathogenic?

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Dehalobacter restrictus conducts anaerobic respiration by

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Which of the following is NOT correct with respect to the mycoplasmas?

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Which of the following statements is NOT correct regarding the life cycle of Chlamydia? Which of the following statements is NOT correct regarding the life cycle of Chlamydia?

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Corynebacterium species have a particular type of cell division that can be described as

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Where do Chromatium cells store sulfur?

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The epsilonproteobacterium Helicobacter pylori is the cause of gastritis and stomach ulcers. What mechanism allows it to survive the acidic conditions of the mammalian stomach?

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All of the following are mechanisms that provide an anoxic environment for nitrogen fixation in cyanobacteria EXCEPT

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What distinguishes bacterial cell walls from those in archaea and eukarya?

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Which genus within the spirochetes includes the causative agent of Lyme disease?

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Which of the following is an extremophile?

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Which of the following is NOT correct about the outer membrane of Gram-negative proteobacterial cell wall?

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Which gammaproteobacteria genera include species that oxidize H₂S to S⁰?

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