Why is charles darwin's theory more convincing than Lamarck’s theory?

Darwin's theory became accepted because it had more evidence that supported it. Lamarck's theory suggest that all organisms become more complicated over time, and therefore doesn't account for simple organisms, such as single-cell organisms.

the binding of the substrate is dictated by the shape of each molecule. side chains on the enzyme interact with the substrate in a specific way, resulting in the making and breaking of bonds.