Consider the following statements:
1. Some microorganisms can grow in environments with temperature above the boiling point of water.
2. Some microorganisms can grow in environments with temperature below the freezing point of water.
3. Some microorganisms can grow in highly acidic environment with a pH below 3.
How many of the above statements are correct?
Correct Answer: Option C
Explanation
1. Statement 1: Hyperthermophilic microorganisms, particularly certain species of Archaea, have been found to grow in environments such as deep-sea hydrothermal vents where temperatures exceed the boiling point of water (100°C at standard pressure). This statement is correct.
2. Statement 2: Psychrophilic microorganisms are adapted to cold environments and can grow at temperatures below the freezing point of water (0°C). They are found in polar regions, glaciers, and deep oceans. This statement is correct.
3. Statement 3: Acidophilic microorganisms thrive in highly acidic environments. Many bacteria and archaea can grow optimally at pH values below 3, such as those found in acid mine drainage or volcanic areas. This statement is correct.
4. Since all three statements are correct, the correct option is (C) All three.
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