Question

which of the following is true regarding enzymes? enzymes provide energy for biochemical reactions. the instructions for the synthesis of an enzyme are found in dna. one enzyme can catalyze many different types of reactions. each enzyme molecule can be used only once. the synthesis of an enzyme involves hydrolysis reactions. (interface elements: submit, request answer, provide feedback)

Explanation:

• Analyze each option:
• Enzymes are biological catalysts and do not provide energy; they lower activation energy. So "Enzymes provide energy for biochemical reactions" is incorrect.
• Enzymes are proteins (or RNA), and the instructions for their synthesis (the gene) are in DNA. This is correct.
• Enzymes are specific to substrates (lock - and - key model), so one enzyme catalyzes a specific type of reaction, not many different types. So "One enzyme can catalyze many different types of reactions" is incorrect.
• Enzymes are reusable; they are not used up in a reaction. So "Each enzyme molecule can be used only once" is incorrect.
• Enzyme synthesis (like protein synthesis) involves dehydration synthesis, not hydrolysis. So "The synthesis of an enzyme involves hydrolysis reactions" is incorrect.

Answer:

The instructions for the synthesis of an enzyme are found in DNA.