Essay
The visual pigment in animal cells consists of an isomer of retinal linked to the protein opsin, as shown below. Write an alternative resonance form for this species that shows the positive charge situated on the starred carbon instead of the nitrogen atom and include the curved arrows to show the electron flow. 
Correct Answer:
Verified
Correct Answer:
Verified
Q15: Draw a Lewis structure for each of
Q16: The condensed structure for dimethyl ether looks
Q17: Which of the following molecules would exhibit
Q18: In aromatic nitration reactions, nitric acid (HNO<sub>3</sub>)
Q20: Draw two resonance forms for the cyclopentadienyl
Q21: Write an equation for the reaction of
Q22: Consider the molecules below to answer the
Q23: Which of the following statements is not
Q24: Use the convention δ−/δ+ and the crossed
Q37: Instructions: Indole is pleasant smelling in highly