Answer:
A. Interferons
Explanation:
According to Wikipedia, "Interferons are a group of signaling proteins made and released by host cells in response to the presence of several viruses. In a typical scenario, a virus-infected cell will release interferons causing nearby cells to heighten their anti-viral defenses."
All of the above apply to your question
Answer: Fitness includes five essential components, flexibility, cardio respiratory fitness, muscular endurance, muscular strength, and body composition.
Explanation:
These five components are vitally important to health and wellness as well as to the ability to engage in normal activities of daily living (ADL"s) such as performing chores or taking care of loved ones. Your exercise training programs should be designed with the intent of improving each of the five components of fitness. This will help ensure optimal health and performance in addition to preventing chronic disease (e.g. heart disease, diabetes, osteoporosis etc.).
