What disease has been cured due to gene therapy? A. Hemophilia
B. Cystic fibrosis
C. Tay-sachs
D. Severe combined immune deficiency

Its severe combined immune deficiency

Explanation:

when you search it up SCID is the only disease so far that had been cured due to gene therapy

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.