12) A culture medium on which only gram-negative bacteria grow: A) PEA agar B) M

Question

12) A culture medium on which only gram-negative bacteria grow: A) PEA agar B) MSA agar C) Nutrient agar D) EMB agar 13) A culture medium consisting of agar, peptone, and beef heart is a A) chemically defined medium. B) complex medium. C) selective medium. D) differential medium. 14) During which growth phase will gram-positive bacteria be most susceptible to penicillin? A) lag phase B) log phase C) death phase D) stationary phase E) The culture is equally susceptible during all phases. 15) In this figure, which tube shows the expected growth pattern for an obligate aerobe? A) a B) b C) c D) d E) e d. 16) Which of the following pairs of terms is mismatched? A) disinfectant - destroys microbes on living tissue B) virucide- inactivates viruses C) autoclave - destroys all forms of microbial life D) antibiotics - destroys or controls bacterial infection 17) Which of the following chemical agents is used for sterilization? A) alcohol B) phenolies C) ethylene oxide D) chlorine E) soap

Explanation / Answer

12 ) A -EOSIN METHYLENE BLUE

13) B- COMPLEX MEDIA

14) B- LOG PHASE

15) A  

16) C- DESTROYES ALL FORMS OF MICROBIAL LIFE

17)A - 70% ALCOHOL

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