Kingdom Prokaryotae MCQs for MDCAT Practice

Biology section, Kingdom Prokaryotae chapter. Sample questions from past PMC papers.

1. Question 1
   When coccus divides in three planes, it will produce a:
   • A.Sarcina
   • B.Tetrad
   • C.Streptococcus
   • D.Staphylococcus
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2. Question 2
   Division of cucci in three planes results in formation of:
   • A.Sarcina
   • B.Tetrad
   • C.Streptococci
   • D.All of the above
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3. Question 3
   Bacteria which obtain their food from dead organic matter called as
   • A.heterotrophs
   • B.autotrophs
   • C.saprophytic
   • D.symbiotic
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4. Question 4
   If we say that antibiotics kill the bacteria when it is in the rapidly dividing and growing phase, then when will an antibiotic penicillin kill the bacteria?
   • A.Stationary phase
   • B.Lag phase
   • C.Log phase
   • D.Death phase
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5. Question 5
   All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia
   • A.Can induce root nodules on many plant species
   • B.Can fix nitrogen in the freeliving state
   • C.Cannot fix specialized vesicles in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hopanoids
   • D.Like Rhizobium, it usually infects its host plant through root hair deformation and stimulates cell proliferation in the host’s cortex
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6. Question 6
   Auxospores and hormogonia are formed, respectively, by
   • A.Some diatoms and several cyanobacteria
   • B.Some cyanobacteria and many diatoms
   • C.Everal cyanobacteria and several diatoms
   • D.Several diatoms and a few cyanobacteria
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7. Question 7
   Which of the following is aerobic bacterium?
   • A.Spirochete
   • B.E. coli
   • C.Cyanobacteria
   • D.Pseudomonas
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8. Question 8
   The physical method used to control Bacteria is
   • A.Antiseptics
   • B.Disinfectants
   • C.Pasteurization
   • D.Antibiotics
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