The following question has tivo parts. First, answer part A. Then, answer part B.
Part A
The graph shows the relative enzymatic activity among four different enzymes.
Enzyme Achilly
10
12
PH
Which enzyme would be most efficient in an environment where the pH level can fluctuate between
acidic and basic?
@ enzyme A
enzyme B
enzyme c
enzyme D
Part B
What would happen if enzyme A svas placed in an environment with a pH of 9?
Enzyme A would become more efficient.
@ Enzyme A would slow or stop functioning.
© Enzynse A would be transformed back into RNA.
© Enzyme A would become the substrate for enzyme D

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.