Round off 77.655 and 77.625 to four significant figures. a 77.66 and 77.62
b 77.66 and 77.63
c 77.65 and 77.63
d None of the above

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.