What is acquired immunity?

What is acquired immunity?

• A. Immunity that is present at birth
• B. Immunity that is developed by the body after overcoming a disease
• C. Immunity gained from medical treatments only
• D. Immunity that is universally effective

Answer: (B)

Acquired immunity refers to the type of immunity that develops after the body is exposed to a disease or pathogen. This exposure can occur through various means, such as recovering from an illness or through vaccinations. When the immune system encounters a foreign invader like a virus or bacterium, it responds by creating specific antibodies and memory cells that recognize and remember the pathogen. This allows the body to mount a faster and more effective response if it encounters the same pathogen in the future, thereby providing protection against reinfection. The other options do not accurately describe acquired immunity. For example, immunity present at birth is known as innate immunity, which involves natural defenses that are not dependent on past exposure. Immunity gained solely from medical treatments would be too restrictive, as acquired immunity can also be developed through natural exposure to diseases. Finally, the notion of immunity being universally effective does not apply, as not all individuals may mount a strong or durable immune response after exposure, which can vary based on numerous factors, including age, health status, and genetic predisposition.

Acquired immunity refers to the type of immunity that develops after the body is exposed to a disease or pathogen. This exposure can occur through various means, such as recovering from an illness or through vaccinations. When the immune system encounters a foreign invader like a virus or bacterium, it responds by creating specific antibodies and memory cells that recognize and remember the pathogen. This allows the body to mount a faster and more effective response if it encounters the same pathogen in the future, thereby providing protection against reinfection.

The other options do not accurately describe acquired immunity. For example, immunity present at birth is known as innate immunity, which involves natural defenses that are not dependent on past exposure. Immunity gained solely from medical treatments would be too restrictive, as acquired immunity can also be developed through natural exposure to diseases. Finally, the notion of immunity being universally effective does not apply, as not all individuals may mount a strong or durable immune response after exposure, which can vary based on numerous factors, including age, health status, and genetic predisposition.