Question

Which correctly compares the immunity produced by a vaccine with the immunity produced by injection of antibodies from an external source?

Injection of antibodies helps the body develop memory cells, which only produces a temporary immunity, whereas a vaccine can fight infection for years.

A vaccine helps the body develop memory cells that make immunity last, whereas injection of antibodies only produces a temporary immunity.

Injection of antibodies helps the body develop its own copies of the antibodies so immunity lasts, whereas a vaccine only produces a temporary immunity.

Answer 1

"A vaccine helps the body develop memory cells that make immunity last, whereas injection of antibodies only produces a temporary immunity.".
Vaccines are introduction of antigens in the body to promote an immune response and persistent immunity.
Antibodies injections are used to stop the antigens either because the body should not create it's own antibodies against the antigen (like to prevent Hemolytic Disease of the Newborn) or because the body would not have time to create it's own antibodies (like in Tetanus)

Answer 2

@shrutipande9

Answer 3

the ans is B.do u know wat are vaccines actually?

Answer 4

The difference will be between a short-lived, temporary antibody response versus a long-lived memory by the host immune system.

Antibodies can be administered to a patient to immediately treat a disease, but the host immune system has no idea how to make that antibody, and can't learn how to make the antibody unless it is exposed to the antigen itself.

Memory B cells are produced when your immune system elicits a humoral immune response to some foreign antigen, and is the immune system's way of "archiving" that successful antibody. This is how vaccines work; a foreign antigen, usually against some pathogen, is injected and introduced to the host immune system in an effort to generate antibodies against it. The memory B cells can be reactivated when needed to fight off successive bouts of disease without the need of additional vaccinations.

Answer will be B.

Answer 5

Like a shot that we need so we don't get sick ?

Answer 6

thats true...but in biological terms vaccines are composed of either live attenuated viruses or some other type(srry cant remember the other 1). so wat vaccines do is when injected in our body invokes immune response of low intensity. because of this our body produces memory cells and we become immune to dat particular disease.

Answer 7

live attenuated strain generally has no virulence or very small amt of virulence which cannot cause any har to us.