👉 Adult biology encompasses the complex processes and systems that govern the growth, maintenance, and function of the human body beyond infancy. It includes cellular mechanisms like DNA replication and repair, which ensure genetic stability; organ systems such as the cardiovascular, nervous, and immune systems, which work together to sustain life; and physiological processes like metabolism, which regulate energy use and storage. Adults also experience changes in hormone levels, affecting growth, reproduction, and stress responses, and undergo wear and tear on tissues, leading to aging. The body maintains homeostasis through intricate feedback loops, while the immune system adapts to new pathogens. Additionally, adults must manage environmental factors like diet, exercise, and mental health to support optimal biological function and longevity.
