
Answer:
Hormones that act on the target cells to increase metabolism are Triiodothyronine (Tâ) and Thyroxine (Tâ).
Explanation:
The hormones triiodothyronine (Tâ) and thyroxine (Tâ) are the active forms of thyroid hormone, responsible for increasing cell metabolism.
Both Tâ and Tâare produced by the thyroid gland, in response to the pituitary hormone TSH. Tâ is more abundant but less powerful than Tâ
Thyroid hormones are responsible for controlling cell metabolism, since their increase determines an increase in metabolism, and their deficiency slows it down.
The other options are not correct because: