It is the hormone thymosin. It is secreted by thymus.
No. Most biological catalysts are enzymes
As far as I am aware, dopamine is a brain chemical not a hormone. It has a different biological job to a hormone.
Adrenocorticoriticotrophic hormone
Melatonin is the hormone that sets the biological clock. More melatonin is released during the dark and during sleep. Less is released during strong sunlight.
an antagonistic hormone
Testosterone is the hormone. It is secreted by testis
Melatonin is the hormone that is involved in the rhythmic activities. The melatonin hormone is secreted by the pineal gland that plays a central role in the coordination of the circadian system and circadian rhythms.
Oxytocin is a hormone that is involved in the regulation of mood and social interaction. It is often referred to as the "love hormone" or "bonding hormone" because it plays a role in social bonding, trust, and empathy.
Another name for growth hormone is somatotropin.
"Trophic" describes any hormone that controls the secretion of another hormone
antagonistic effect