Microbiology of Foods
NaCl can act as

synergistically if added in excess of optimum level
Both (a) and (b)
antagonist at optimal concentrations
None of these

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Microbiology of Foods
Which of the following is not true for the thermal resistance of the bacterial cells?

Cocci are usually more resistant than rods
Cells low in lipid content are harder to kill than other cells
Bacteria that clump considerably or form capsules are difficult to kill
Higher the optimal and maximal temperatures for growth, higher the resistance

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