Answer:
d) entry of glucose into cells
Step-by-step explanation:
The process of glucose entry into cells does not involve the fusion of two membranes or two regions of the same membrane. Glucose molecules are transported into cells through various mechanisms, such as facilitated diffusion or active transport, but they do not require membrane fusion. Therefore, option d) entry of glucose into cells is the process that does not involve membrane fusion, while the other options involve membrane fusion or interactions between membranes.