BIOLOGY IN HUMAN WELFARE
HUMAN HEALTH AND DISEASE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
temporary and short-lived
|
|
|
fast and temporary
|
|
|
occurs when a person recovers from an infection
|
|
|
occurs when a vaccine is injected into the body
|
Detailed explanation-1: -Answer and Explanation: The correct statement about active and passive immunity is D. active and passive humoral immunity are both mechanisms of adaptive immunity that use antibodies.
Detailed explanation-2: -Types of immunity: Active natural: Body produces antibodies in response to exposure to a live pathogen. Active artificial: Body produces antibodies in response to a vaccine. Passive natural: Antibodies are passed from the mom to her baby through the placenta and breastmilk.
Detailed explanation-3: -However, passive immunity lasts only for a few weeks or months. Only active immunity is long-lasting.
Detailed explanation-4: -Passive immunity: Passive immunity is “borrowed” from another source and it lasts for a short time. For example, antibodies in a mother’s breast milk give a baby temporary immunity to diseases the mother has been exposed to.