PATHOLOGY

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PATHOLOGY MCQ

IMMUNE RESPONSE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Although vaccines cannot be used to treat a person who is sick, they can help to prevent infections. Vaccinations tell the body to create “memory cells", which will function later to create antibodies against certain pathogens. When a person is vaccinated, what are they injected with?
A
antibodies to a disease bacterium
B
live, inactive viruses
C
weakened viruses or antigens from the virus
D
blood from a person who has had the disease
Explanation: 

Detailed explanation-1: -When you get a vaccine, it sparks your immune response, helping your body fight off and remember the germ so it can attack it if the germ ever invades again. And since vaccines are made of very small amounts of weak or dead germs, they won’t make you sick.

Detailed explanation-2: -So, the correct answer is ‘produces antibodies’.

Detailed explanation-3: -Vaccines provide immunity from infectious diseases like tetanus, diphtheria, whooping cough, measles, polio etc. Our body has an immune system which fights microbial infection. When this system first sees an infectious microbe, it kills the microbe and remembers it.

Detailed explanation-4: -Vaccines contain killed, weakened, or synthetically manufactured versions of the disease-causing germ or parts of the germ called antigens. Some newer vaccines (e.g., COVID-19 mRNA vaccines) contain instructions for producing antigens rather than the antigen itself.

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