Question at position 35 What is the purpose of a vaccine?To remove the pathogen from the bodyTo create memory cells to remember a pathogenTo turnover immune cellsTo weaken the immune system to obtain the pathogen in an external environmentClear my selection

Question

BlackTom AI · Accepted Answer

Consider the question about the purpose of a vaccine and evaluate each option carefully.
Option 1: 'To remove the pathogen from the body' — Vaccines do not remove an existing pathogen from the body. They work prophylactically by training the immune system to respond more effectively to future exposures, not by clearing an infection already present.
Option 2: 'To create memory cells to remember a pathogen' — This statement captures the core function of vaccination. By introducing a harmless piece or inactivated form of the pathogen, the immune system forms memory B and T cells so it can respond rapidly if the real pathogen is encountered later.
Option 3: 'To turnover immune cells' — Vaccination does not primarily cause a general turnover of immune cells. While immune cells may be renewed over time, the vaccine’s aim is to establish a memory response, not to continually replace immune cells.
Option 4: 'To weaken the immune system to obtain the pathogen in an external environment' — This is inaccurate and dangerous. Vaccines do not weaken immunity; they strengthen it and do not involve obtaining pathogens from the environment for purpose of infection.
By weighing these explanations, we can see that the intended goal of vaccination is best described by creating memory cells to recognize and respond to pathogens in the future. The other options mischaracterize the vaccine's purpose, either by implying pathogen removal during infection, unnecessary immune cell turnover, or harmful weakening of immunity.

Question at position 35 What is the purpose of a vaccine?To remove the pathogen from the bodyTo create memory cells to remember a pathogenTo turnover immune cellsTo weaken the immune system to obtain the pathogen in an external environmentClear my selection单项选择题

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