"a child is diagnosed with an enzyme deficiency that prevents the production of hydrogen peroxide. what would the likely outcome be of such a deficiency? "

Peroxisomes depend on hydrogen peroxide in order to function so an enzyme deficiency that ends in the inability to form hydrogen peroxide would likely end up unable to digest things that have long chain fatty acids. These acids would instead build up in peroxissomes until the majority of the cellular contents were displaced by oversized peroxisomes. This would finally end up in cell death.

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.