Question

Testosterone oxi-reductase is a liver enzyme that regulates testosterone levels in alligators. one study compared testosterone oxido-reductase activity between male and female alligators from lake woodruff, a relatively pristine enviroment, and from lake apopka, an area that has suffered severe contamination. the graph above depicts that finding of the study. the data in the graph best supports which of the following claims?Environmental contamination reduces total testosterone oxido-reductase activity in females. ( T/F)

Answer 1

Explanation:

Environmental contamination reduces total testosterone oxido-reductase activity in females.- True

Enzymes are proteins which catalyze reactions by acting on substrates in order to speed up reactions- like the breakdown of large polysaccharides by amylase. Here, the enzyme testosterone oxi-reductase facilitates the of testosterone to the androgen DHT. Enzyme specificity is affected by pH, temperature and the presence of inhibitors.

In temperatures beyond its optimal range, these may undergo changes to its physical structure called denaturation; when denatured, enzymes lose their ability to bind specifically to their substrate -i.e. substrate binding specificity is lost. Testosterone would no longer be able to bind to the active site, and thus would not be converted.

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