1. Isozymes are different forms of an enzyme that catalyze the same reaction but have different characteristics or properties.
同工酶是催化相同反应但具有不同特征或性质的酶的不同形式。

2. The presence of isozymes allows for greater metabolic diversity within a biological system.
同工酶的存在使生物系统内的代谢多样性更大。