Five dialysis bags are used in an experiment about osmosis. Each dialysis bag is filled with the same solution of an unknown concentration and placed in salt solutions. The dialysis bags each had the same starting circumference. After 24 hours, the dialysis bags are carefully removed from each solution and the circumference is measured again. See the data in the table below.

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.