The use of the autoclave ensures: a) the death of all bacteria b) the death of all bacterial spores c) all of the  above d) none of the above.

Your microorganism produce black color in peptone iron agar grown at 37 degrees Celcius overnight.Which enzyme would you predict the this microorganism has ? a)tryotophanase b)gelatinase c)desulfhydrase d)urease e)Cytochrome C

The type of antimicrobial drug that would be most likely to have toxic effects in humans based on the premise of selective toxicity when treating microbial infection would be a drug that O 1) inhibits the synthesis of the cell wall O 2) inhibits metabolic pathways O 3) disrupts the cytoplasmic membrane 4) inhibits protein synthesis 5) All of the above have equal potential to be toxic

About becterial enzymes, it is CORRECT to affirm that: a). Some becterial enzymes can help the microbe fight the immune system, by destroying lgA.b). Coagulases are enzymes that use the host's fibrinogen and form a semi-solid get that isolates amd protects the bacteria.c). Some bacterial enzymes such as hyaluronidase can help the microble move through the host's tissus by destroying the tissue's components.d). Fibrolysin is an enzymes that can help from blood clots.

what treatment can kill the positive result of staphylococcus aureus in a catalase method ?

Which percentage of medical waste is infectious or hazardous? A) 25% B)50% C)75% D) 85%

Which test require a straight line inoculation? Choose all that apply. A) Bile esculinase B) NaCl C) DNA hydrolysis D) Hemolysin

1. What is the most common source of E. coli? (i.e. where does it occur naturally) 2. Why do children seem to be the most ill? (Give at least 2 reasons) 3. What is the morphology, morphological arrangement and Gram reaction of E. coli? 4. How does the E. coli strain 026:H11 damage its victims?

Q50 Microbes cannot be used to produce hormones, enzymes and fuel products.A) TrueB) False

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