Answer:
The reason why drug-resistance mutations reduce certain enzymes activities is due to their inhibition because they cannot give bacterial respond to antibiotics.
Step-by-step explanation:
In other words, enzymes use a series of specific strategies to overcome the toxic properties of antibiotics that, combined with a resistance agent, completely alter the performance of the drug. In addition, drug-resistance mutations contain fully evaded instruments which complicate the effectiveness of certain antibiotics, for example, penicillin.