Use the Following Information to Answer the Question Below $\text { Temperature }\left({ }^{\circ} \mathrm{C}\right) \rightarrow$

question 44

Multiple Choice

Use the following information to answer the question below.
(a)

                         $\text { Temperature }\left({ }^{\circ} \mathrm{C}\right) \rightarrow$

(b)

                                           $\mathrm{PH} \longrightarrow$
Activity of various enzymes at various temperatures (a) and at various pH (b)
Which curves on the graphs may represent the temperature and pH profiles of an enzyme taken from a bacterium that lives in a mildly alkaline hot springs at temperatures of 70°C or higher?

• A) curves 1 and 5
• B) curves 2 and 5
• C) curves 3 and 4
• D) curves 3 and 5

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