STT nào chi cho là dunglesal? (Đanh dau X) Ý kiến Đúng Sai 1 Hormone cần một lượng lớn để gây ra hiệu quả square square sinh học.

The statement "Hormones need a large amount to produce an effect" is generally false in the field of endocrinology. Hormones, by definition, are chemical messengers that are secreted in very small amounts by specific cells (glands) and have significant effects on the activity of target cells. They exert their effects by binding to specific receptors on the target cells, and the response is typically proportional to the concentration of the hormone, but even small amounts can produce substantial effects. This is due to the amplifying nature of hormonal signaling pathways, where a single hormone molecule can trigger a cascade of intracellular events leading to a significant response in the target cell. Therefore, it is not necessary for hormones to be present in large quantities to produce their effects, as their action is highly efficient and potent even at low concentrations.