Moderate

The cofactor usually acts as "bridge" between:

Correct answer: A. Enzyme & substrate

  • A. Enzyme & substrate
  • B. Enzyme & product
  • C. Coenzyme & substrate
  • D. Activator & substrate

Explanation

Cofactors are non-protein molecules that are required for enzymes to work. They are not permanently attached to the enzyme, but they do bind to the enzyme during the reaction. The cofactor helps to bring the enzyme and substrate together, which allows the enzyme to catalyze the reaction. The cofactor usually acts as "bridge" between the enzyme and its substrate, often it contributes directly to the chemical reactions whichbring about catalysis.

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