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Enzymes act as biocatalysts and are known to work in which of the following conditions?

1. An aqueous environment at about 30–35°C and pH 7
2. An organic solvent medium
3. An aqueous environment under highly acidic or highly alkaline pH
4. None of the above

Correct answer: An aqueous environment at about 30–35°C and pH 7

Solution

Enzymes are biocatalysts that function optimally in an aqueous medium at moderate temperature (about 30-35 C) and near-neutral pH (~7). Extreme acidity/alkalinity or organic solvents denature them, so the correct condition is the aqueous, ~30-35 C, pH 7 environment.

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