Question

a person takes a powerful, long - term antibiotic that kills a wide variety of bacteria, including the harmless ones living in their gi tract. based on the text, what is a likely negative consequence? their skin will become a less effective mechanical barrier. harmful bacteria may have a better opportunity to grow because their biological barrier has been compromised. viruses will now be unable to reproduce inside their cells. their stomach acid will become less effective at killing pathogens. the text describes plasma cells as \antibody factories.\ which of their characteristics makes this analogy particularly fitting? they live for a very long time, like a factory that never closes. they are very large, like a factory building. they produce many copies of a single, specific product (one type of antibody). they travel throughout the body, delivering their products directly to the site of infection.

Explanation:

1. When a person takes a powerful, long - term antibiotic that kills harmless bacteria in the GI tract, the normal microbiota (a biological barrier) is disrupted. This allows harmful bacteria to have less competition and a better chance to grow. Skin is not related to this effect, antibiotics don't directly affect virus reproduction, and stomach acid is not impacted by this antibiotic action on gut bacteria.
2. Plasma cells are called "antibody factories" because they produce large quantities of a single, specific type of antibody, similar to a factory producing many copies of a single product. Their lifespan, size, or movement are not the main reasons for this analogy.

Answer:

1. Harmful bacteria may have a better opportunity to grow because their biological barrier has been compromised.
2. They produce many copies of a single, specific product (one type of antibody)