The autoclave uses a combination of ___ to accomplish its function: a) temperature and pressure b) chemical and thermal parameters c) Gas and pressure d) antimicrobial and inorganic parameters

This petri plate shows the susceptibility of Staphylococcus aureus to different antibiotics. Which antibiotic is least effective?   a)  Methicillin - Meth   b)  Control   c)  All are ineffective   d)  Ampicillin - Amp   e)  Vancomycin - Van

Penicillin:

Adherence to the intestinal lining by a bacterium may be due to its possession of _____. A) endospores B) pili C) a flagellum D) F+ plasmid

Which antibiotic affects cell wall synthesis?a)streptomycin b) erythromycin c) tetracycline d)penicillin

Why are petri dishes ALWAYS stored and incubated upside down?   Question 17 options:   a)  helps bacteria grow   b)  the lid is larger and make the dish more stable   c)  prevents condensation from dripping on to agar surface   d)  so the label can be seen

Refer to the figures above: 41) Which figure displays the rate of bacterial growth in a living animal? a) Figure A b) Figure C C) Both d) Neither e) Cannot be determined 42) Which figure tests the effects of one or more lymphocytes? a) Figure A b) Figure C c) Both d) Neither e) Cannot be determined 43) Which figure demonstrates that addition of effector PCs leads to bacterial death? a) Figure A b) Figure C C) Both d) Neither e) Cannot be determined 44) Based on these figures, Listeria infection control is most directly due to which effector cell: a) CTL b) T helper c) Macrophage d) Basophil d) None of the above

The difference in the colony appearance of bacteria cells growing on mannitol salt agar is detected by a) methyl blue b)methyl red c) phenol d) eosin e) salt .

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.

A microbe is only capable of growth at pH range of 8.5-10 in the presence of atmospheric levels of oxygen.  Which statements are correct?  Mark all that apply.    A.)The microbe is likely to be a human pathogen      B.)The microbe is a mesophile        C.)The microbe is an obligate aerobe      D.) The microbe is an alkiliphile