how does a eukaryotic cell benefit from its internal membranes?

Answer 1

The membranes of the organelles carry out specific processes during photosynthesis and respiration. (Prokaryotic cells have to use their plasma membranes for these processes - electron transport, etc. ) In addition, the membranes compartmentalize enzymes and other molecules to allow many processes to continue at the same time in a single cell.

Answer 2

Not only do they provide barriers and a means of passage, many cell processes require large amounts of membrane to function. This need for large membranes is often solved by folding the membrane to achieve more area in a smaller space. Processes like cellular respiration, osmosis, and photosynthesis all require a membrane to complete.