Question

question 8
in many organelles, groups of different enzymes are located on membranes in close proximity to each other because
attaching enzymes to the membrane prevents the cell from losing them to the surrounding environment.
when enzymes are in close proximity, each one can catalyze more than one type of reaction.
these enzymes are involved in the same metabolic pathway and keeping them closer together increases the efficiency of the pathway.
all enzymes must act in groups to position substrates in the proper orientation to produce the product.

Explanation:

Enzymes in organelles often function in metabolic pathways. Keeping enzymes involved in the same pathway close together on membranes enhances the pathway's efficiency as substrates can be passed more quickly between them. The other options are incorrect: attaching to membrane isn't the main reason for close - proximity; enzymes typically have specific reactions they catalyze; and not all enzymes must act in groups for substrate orientation.

Answer:

these enzymes are involved in the same metabolic pathway and keeping them closer together increases the efficiency of the pathway.