In an experimental situation, a virus is injected into a rabbit and the rabbit is allowed to make antibodies for the viral antigen. these antibodies are then removed from the rabbit plasma and injected into a human to deal with the same viral disease. this would be an example ofa) autoimmunity. b) active immunization. c) natural immunity. d) innate immunity. e) passive immunization.

The correct answer is e) Passive immunization

Explanation:

In passive immunity, the antibodies against any pathogen or antigen are introduced in an organism's body from outside to provide it instant protection against that pathogen. The passive immunity can be natural or artificial.

Mother feeding antibodies rich milk to her child is an example of naturally acquired immunity and antibodies that are raised by humans in animals against an antigen when injected to a person shows an example of artificially acquired passive immunity.

So here human is given antibodies against a virus from outside which is raised in rabbit so it is an example of passive immunity which is artificially acquired.

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.