Passage IV
Certain odorants (airborne chemical compounds) can stimulate a change in the electrical activity of the olfactory neurons in the antennae of the moth Manduca sexta. The change in the electrical activity of an antenna in the presence of an odorant can be detected as an increase in the antenna’s voltage relative to its voltage in the absence of odorants. The figure below shows the average change in antennal voltage for adult female M. sexta that were exposed to each of 5 odorants at each of 4 concentrations.
24. For which of the following combinations of odorant and concentration was the average change in antennal voltage closest to the average change in antennal voltage for 50 mg/L of nerolidol?
Your Answer is
Correct Answer is G
Explanation
Look at the picture, corresponding nerolidol, when the abscissa is 50 mg/L, The corresponding ordinate is about180; the closest to this value islinaloolat a concentration of 10 mg/L is the closest value.