Select a group within Bacteria that has a rare structural morphology observable with a microscope. Describe the appearance, the group that it corresponds to, and another group that would certainly be ruled out when observing such a morphology

What will be an ideal response?


Answer: Answers will vary based on the taxonomic group selected. Possible answers include: Sarcina cells occurring in packets of eight or more, coryneform bacteria being V-shaped due to their cell division strategy, Planctomycetes stalked cells that also bud, many projecting prosthecae in Verrucomicrobia, and intracellular compartments in Planctomycetes.

Biology & Microbiology

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Which organism would likely harbor the MOST two-component regulatory systems?

A) an archaeon living in an extreme environment B) a bacterium occupying a heterogeneous niche will high nutrient mixing C) an organism capable of quorum sensing D) a parasitic bacterium living inside another organism

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When an animal imitates the behavior of another animal, this is an example of ________

a. operant conditioning b. habituation c. classical conditioning d. none of the choices

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Archaeopteryx is a transitional form between

a. birds and mammals. b. mammals and reptiles. c. birds and reptiles. d. fish and amphibians. e. amphibians and reptiles.

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A virulence factor common to many members of the Enterobacteriaceae which permits them to deliver harmful proteins directly to cells is

A. fimbriae. B. a glycocalyx. C. type III secretion system. D. pili. E. porins.

Biology & Microbiology