Answer :

Final answer:

Thyroxine is the key hormone in controlling metabolism.


Explanation:

Thyroxine plays a significant role in controlling the rate of metabolism. It is a key regulator of the basal metabolic rate (BMR), with higher levels leading to increased metabolic activity. Additionally, adrenaline also contributes to increasing BMR to a lesser extent.


Learn more about Role of thyroxine in metabolic regulation here:

https://brainly.com/question/36216433