in broth at 37° C. & in the refrigerator. 51. With respect to the action of phys
ID: 219040 • Letter: I
Question
in broth at 37° C. & in the refrigerator. 51. With respect to the action of physical/chemical agents, which of the following is false? A. Alcohols and heat coagulate proteins. B. Oxidizing agents and metals may oxidize and remove free sulfhydryl groups. C. It take just as long to kill the last organism in a population of one million as it did to kill the first 900,000. D. Th E. All of the above are true. e presence of extraneous excess organic matter increases the effectiveness of killing. 52. What would be a suitable method for disinfecting expensive medical instruments (e.g. cytoscopes, endoscopes) between patients? A. Formaldehyde B. Glutaraldehyde C. Triclosan D. Mercury E. 5% hypochlorite. 53. Allosteric enzymes A. have multiple active sites for different substrates. B. have a site that binds to other enzymes. C. have an additional binding site other than the active site that is involved in regulating enzyme activity. D. bind allosteric inhibitors (or activators) in the "other site." E. C and DExplanation / Answer
51. The answer is E. All of the above are true.
52. The answer is A. Formaldehyde
This process is called fumigation.
53. The answer is E. C and D.
Allosteric enzymes have two differnt site viz., active sites and allosteric site. The substrate binds to active site and effector binds to allosteric site. Effector regulates enzyme activity. The effector may be either inhibitor or activator.
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