Acatalyst is

-choices-
not used up in a reaction
the product of a combustion reaction
one of the reactants in a single-replacement reaction
a solid product of a reaction

Two things that biomedical has invented or innovated

Write the overall equation for the reaction for lithium battery

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.