1.0 timol of an enzyme that contains five active sites per molecule converts 1.0 pmol substrate every 2 microseconds. Calculate catalytic centre activity (sec^-1). ......10^5

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#Question id: 1820

#Section 2: General Biology

Which of the following statements is TRUE of histamine?

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#Question id: 1831

#Section 2: General Biology

The pyrogenic streptococcal exotoxins SPE, A, B, and H:

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#Question id: 1832

#Section 2: General Biology

Individuals lacking C8 or C9 are more prone to infection with the following type of bacteria:

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#Question id: 1834

#Section 2: General Biology

Lepromatous leprosy is characterized by:

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#Question id: 1835

#Section 2: General Biology

The HIV nef protein affects antigen presentation by:

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#Question id: 1836

#Section 2: General Biology

What is the feature that best uniquely describes NK cell activity against a virus-infected cell?