Describe the two types of immunity: Active & Passive.

Describe the two types of immunity: Active & Passive.

• A. Active: Immunity you're born with. / Passive: Immunity you get through immunization.
• B. Active: Immunity from vaccines. / Passive: Immunity from sunlight.
• C. Active: Immunity through diet. / Passive: Immunity from exercise.
• D. Active: Immunity from antibiotics. / Passive: Immunity from disinfectants.

Answer: (B)

Active immunity is when the body learns to fight pathogens by producing its own antibodies and memory cells in response to an antigen. Vaccines are a tool that exposes the immune system to harmless parts of a pathogen, training it to respond quickly and effectively if the real pathogen is encountered later. This type of protection is long-lasting because memory cells stay in the body and respond on re-exposure. Passive immunity, on the other hand, comes from receiving antibodies made by others. This happens when a mother passes antibodies to her baby through the placenta or breast milk, or when immune globulins are given as a treatment. It provides immediate protection, but it’s temporary because the borrowed antibodies are eventually used up and no lasting memory is formed. Among the options, the statement that active immunity comes from vaccines correctly reflects how active immunity is generated. The passive part described (from sunlight) isn’t scientifically accurate, and other choices link immunity to diet, exercise, antibiotics, or disinfectants, which don’t create immunity.

Active immunity is when the body learns to fight pathogens by producing its own antibodies and memory cells in response to an antigen. Vaccines are a tool that exposes the immune system to harmless parts of a pathogen, training it to respond quickly and effectively if the real pathogen is encountered later. This type of protection is long-lasting because memory cells stay in the body and respond on re-exposure.

Passive immunity, on the other hand, comes from receiving antibodies made by others. This happens when a mother passes antibodies to her baby through the placenta or breast milk, or when immune globulins are given as a treatment. It provides immediate protection, but it’s temporary because the borrowed antibodies are eventually used up and no lasting memory is formed.

Among the options, the statement that active immunity comes from vaccines correctly reflects how active immunity is generated. The passive part described (from sunlight) isn’t scientifically accurate, and other choices link immunity to diet, exercise, antibiotics, or disinfectants, which don’t create immunity.