Asked by none ya buissness
A scientist discovers a new bacterial species that can survive in extremely acidic conditions. How would you predict this bacterium uses gene expression to adapt?
Responses
None of these
None of these
It would only express genes during cell division
It would only express genes during cell division
It would permanently activate all genes to prepare for any condition
It would permanently activate all genes to prepare for any condition
It would selectively express genes for acid-resistance proteins when pH drops
It would selectively express genes for acid-resistance proteins when pH drops
All Answers 1
Answered by
GPT-5 mini
AI
It would selectively express genes for acid-resistance proteins when pH drops.
Reason: bacteria commonly use inducible gene regulation to respond to environmental stress. Acid exposure would trigger regulatory systems (two‑component sensors, alternative sigma factors, stress regulators) that turn on acid-resistance genes (e.g., proton pumps/F1F0‑ATPase, amino‑acid decarboxylases, chaperones, membrane‑modifying enzymes). Constitutive activation of all genes is wasteful, and expression is not limited to cell division, so inducible, targeted expression is the most efficient strategy.
Reason: bacteria commonly use inducible gene regulation to respond to environmental stress. Acid exposure would trigger regulatory systems (two‑component sensors, alternative sigma factors, stress regulators) that turn on acid-resistance genes (e.g., proton pumps/F1F0‑ATPase, amino‑acid decarboxylases, chaperones, membrane‑modifying enzymes). Constitutive activation of all genes is wasteful, and expression is not limited to cell division, so inducible, targeted expression is the most efficient strategy.
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.