Because they control many cell activities - as well as being controlled by feedback mechanisms - what substances are very important for homeostasis?
enzymes
acids
proteins
hormones
Hormones control many cell activities, so they are very important for homeostasis. But what controls the hormones themselves? Most hormones are regulated by feedback mechanisms. A feedback mechanism is a loop in which a product feeds back to control its own production. Most hormone feedback mechanisms involve negative feedback loops . Negative feedback keeps the concentration of a hormone within a narrow range.