In many organelles,groups of different enzymes are located on membranes in close proximity to each other because

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Enzymes located on membranes in close proximity to each other are usually involved in the same metabolic pathway. Keeping them closer together increases the efficiency of the pathway by reducing the diffusion distance for substrates and products, and by allowing for faster and more efficient enzymatic reactions. This spatial organization is particularly important in organelles such as the mitochondria and chloroplasts, where many metabolic pathways occur simultaneously and require coordination. The other choices are not accurate, as not all enzymes need to act in groups, and not all enzymes are attached to membranes to prevent their loss or to catalyze multiple reactions.

In Many Organelles,groups of Different Enzymes Are Located on Membranes