Question

15. The internationally recognized reference for bacterial classification and identification is called Bergey’s Manual for Systematic Bacteriology
True
False

27. Heat-fixation is performed in slide preparation in order to _________________________________.
       
Change the morphology of the organisms on the slide
       
Encourage bacterial growth on the slide
       
Inactivate and adhere microorganism placed on the slide
       
Protect the bacteria by hardening them to prevent destruction by the staining procedure

30. New approaches to antimicrobial therapy include
       Probiotics
       Prebiotics
       Bacteriophage against specific pathogens
       Fecal transplants from healthy individuals
       All of the answers are correct

32. Which of the following is not a causative agent in acute encephalitis?
       Naegleria fowleri
       Arboviruses
       West Nile virus
       Powassan virus

35. Which of the following processes is not a mechanism for prokaryotic organisms to accomplish horizontal gene transfer?
       
Transfiguration
       
Conjugation
       
Transformation
       
Transduction

Answer 1

15. True.

Bergey's Manual of Systematic Bacteriology is extensively used reference to identify prokaryotes, based on every characterizing aspect. Bergey's Manual of Determinative Bacteriology is solely designed for the identification of bacterial species.

27 Answer: (C) Inactivate and adhere microorganism placed on the slide.

The purposes of heat fixation are denaturation of bacterial enzymes and enhancing the adherence of the bacterial culture to the slide.

30. Answer:(D) All of the answers are correct.

Prebiotics are dietary fibers to feed the gut microbiota thereby fighting against invading GI pathogens. Probiotics are live bacteria found in dietery fermented foods.Bacteriophages are viruses that only kill bacteria. Fecal transplant from healthy donor is proven to be a better bacterial therapy for GI infections.

32. Answer:(C) Arboviruses.

Arbovirus is a collective name for arthropod mediated transmitted viruses.

35. Answer: (A) Transfiguration.