Grade 12 Exam > Grade 12 Videos > Biology for Grade 12 > Innate & Acquired Immunity
Innate & Acquired Immunity Video Lecture | Biology for Grade 12
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FAQs on Innate & Acquired Immunity Video Lecture - Biology for Grade 12
| 1. What is innate immunity? |  |
Ans. Innate immunity is the first line of defense in our body against pathogens. It is a non-specific immune response that is present from birth and provides immediate protection. This type of immunity includes physical barriers like skin and mucous membranes, as well as cellular components like white blood cells.
| 2. What is acquired immunity? | |
Ans. Acquired immunity, also known as adaptive immunity, is the immune response that develops after exposure to a specific pathogen. It is a highly specific and targeted response that involves the recognition and memory of the pathogen. Acquired immunity is characterized by the production of antibodies and the activation of specialized immune cells.
| 3. How does innate immunity differ from acquired immunity? | |
Ans. Innate immunity and acquired immunity differ in several ways. Innate immunity is present from birth and provides immediate, non-specific protection against a wide range of pathogens. It does not require prior exposure to the pathogen. On the other hand, acquired immunity develops after exposure to a specific pathogen and provides a targeted and specific response. It involves the production of antibodies and the activation of specialized immune cells.
| 4. What are some examples of innate immunity? | |
Ans. Examples of innate immunity include physical barriers like the skin and mucous membranes, which prevent the entry of pathogens into the body. Additionally, immune cells like neutrophils and macrophages are part of the innate immune system and can engulf and destroy pathogens. The inflammatory response is also a component of innate immunity.
| 5. How does acquired immunity provide long-term protection? | |
Ans. Acquired immunity provides long-term protection through the development of memory cells. When the body is exposed to a specific pathogen, it produces antibodies that target and neutralize the pathogen. Some of these antibodies remain in the body even after the infection is cleared, providing long-term immunity. If the same pathogen is encountered again in the future, the memory cells quickly recognize it and mount a rapid and targeted immune response.
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Dec 22, 2024 Last updated |
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