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Enzymes derived from alkaliphiles are included in modern detergents. These microorganisms thrive in highly alkaline habitats such as soda lakes or soils with elevated pH levels, typically ranging from 9 to 11. While the external environment is highly alkaline, alkaliphiles maintain an internal cellular pH of around 9 by regulating hydrogen ion exchange.

1. (a) The statement is accurate.
2. (b) The statement is inaccurate.
3. (c) The statement is partially accurate.
4. (d) None of these are correct.

Correct answer: (a) The statement is accurate.

Solution

The statement is correct as alkaliphiles are known to thrive in alkaline environments and maintain their internal pH by regulating hydrogen ion exchange.

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