The movement of water across the semipermeable membrane is called osmosis.
The semipermeable or selectively permeable membrane allows only certain solutes to pass through the membranes and hinders other solutes. The water level is the same, but the concentration of the solutes is different on both sides of the membrane. So this passive transport of the water occurs to balance the concentration of solutes on both sides of the membrane.
both aerobic respiration and fermentation produces carbon dioxide as a product but however fermentation occurs without oxygen and this was seen in the experiment.
