NEET · Biology · Human Health and Disease doubts
10 doubts found
A snakebite victim is given antivenom, not a vaccine. Why?
A vaccine works by getting the body to make its own antibodies and memory cells, which takes days to weeks.
Why does a vaccinated person respond faster and more strongly when they later meet the real pathogen?
A vaccine exposes the immune system to a harmless form of the antigen, producing not only antibodies but also long-lived memory B and T cells.
What does “Innate vs acquired immunity” actually mean in Human Health and Disease, and why does it matter for NEET?
innate immunity is non-specific and present from birth (skin, phagocytes); acquired immunity is specific and develops after exposure, with antibodies and memory.
I keep getting “Innate vs acquired immunity” questions wrong in Human Health and Disease. What's the trap?
thinking all immunity is present from birth.
What does “Active vs passive immunity” actually mean in Human Health and Disease, and why does it matter for NEET?
active immunity is made by your own body after infection or a vaccine (lasting); passive immunity is ready-made antibodies given from outside (quick but short-lived).
I keep getting “Active vs passive immunity” questions wrong in Human Health and Disease. What's the trap?
calling a vaccine passive immunity.
What does “Antibody structure” actually mean in Human Health and Disease, and why does it matter for NEET?
a Y-shaped protein of four chains -- two heavy and two light (H2L2).
I keep getting “Antibody structure” questions wrong in Human Health and Disease. What's the trap?
thinking an antibody is a single polypeptide chain.
What is the difference between active immunity and passive immunity?
Active immunity is produced by one's own body after infection or vaccination and is long-lasting; passive immunity is borrowed ready-made antibodies (colostrum, antiserum) that act at once but fade quickly.
How is Human Health and Disease tested in NEET, and what should I focus on?
Prioritise the core ideas: Innate vs acquired immunity, Active vs passive immunity, Antibody structure.