Immunity acquired after an infection isa)Active immunityb)Passive immunityc)Innate immunityd)Both B and CCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

Active immunity is acquired after an infection occurs in our body...in active immunity antibodies are produced naturally in the body...this active immunity is of two types..natural active immunity and artificial active immunity..option A

Answer

Option A is correct becose active immunity means production of antibodies against the deacease causative pathogen antigens.. it takes place after infection first it shows primary response it is very low.. another time same antigens are enter into the body mammory cells are identifi that antigens, plasma cells fight against thet antigens. this is called secondary immune response.. it is very active response..

Answer

Obviously it is active immunity

Answer

Naturally acquired active immunity occurs when a person is exposed to a live pathogen and develops a primary immune response , which leads to immunological memory ,this type of immunity is natural  because deliberate exposure does not induce it

Answer

How did egg reach to the Fallopian tubes from ovaries

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BActive immunitytag> is the correct answer.

Active immunity is the immunity acquired after an infection. It is a form of acquired immunity, which means it is developed by an individual's immune system after exposure to a specific pathogen. This type of immunity provides long-term protection against subsequent infections by the same pathogen. There are two types of active immunity: natural and artificial.

Natural active immunity occurs when a person is exposed to a live pathogen and develops an immune response, leading to the production of memory cells. These memory cells 'remember' the pathogen and can mount a rapid and specific immune response upon subsequent exposure. For example, when a person contracts a viral infection, such as chickenpox, the immune system responds by producing antibodies and memory cells that provide immunity against future infections with the same virus.

Artificial active immunity, on the other hand, is induced by vaccination. Vaccines contain either weakened or inactivated forms of pathogens or components of pathogens that stimulate the immune system to produce an immune response. This immune response leads to the production of memory cells, providing long-term protection against future infections. Vaccination has been instrumental in preventing numerous infectious diseases and has significantly reduced their global burden.

Active immunity is different from passive immunity. Passive immunity is the transfer of pre-formed antibodies from one individual to another. It provides immediate, but temporary, protection against a specific pathogen. Passive immunity can occur naturally, such as the transfer of antibodies from a mother to her fetus through the placenta or through breast milk. It can also be artificially acquired through the administration of antibodies, such as immune globulins or antivenoms. However, passive immunity does not result in the production of memory cells and therefore does not provide long-term protection.

Innate immunity is the first line of defense against pathogens and is present at birth. It includes physical barriers (e.g., skin), chemical barriers (e.g., enzymes in tears and saliva), and cellular components (e.g., macrophages and natural killer cells). Innate immunity provides immediate, nonspecific protection against a wide range of pathogens, but it does not confer long-term protection or immunological memory.

In summary, active immunity is the immunity acquired after an infection or vaccination. It involves the production of memory cells that provide long-term protection against future infections with the same pathogen. Passive immunity, on the other hand, involves the transfer of pre-formed antibodies and provides immediate, but temporary, protection. Innate immunity is present at birth and provides immediate, nonspecific protection against pathogens.

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