What description below explains what happens to energy transfer in hot packs?​

Iwll give extra points to who gets this for ! what type of reaction is this? ?

What is a metal replacement reaction

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.