Which of the following is a correct statement ?

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Low temperature destroys the enzyme by causing their denaturation.

High temperature preserves the enzyme in their inactive state.

Enzymes catalyse biochemical reactions by increasing activation energy.

All biomolecules participating in metabolic pathways have a turnover.

answer is D.

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Detailed Solution

Turnover means that biomolecules are constantly being changed into some other biomolecules and also made from some other biomolecules. This breaking and making is through chemical reactions constantly occurring in living organisms.
Each enzyme shows its highest activity at a particular temperature and pH called the optimum temperature and optimum pH. Activity declines both below and above the optimum value. Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat.
Enzymes catalyze biochemical reactions by decreasing activation energy.

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