Hyperthermophilic Archaea Possess an Unusual Gyrase Called ________, Which Introduces

question 38

Multiple Choice

Hyperthermophilic archaea possess an unusual gyrase called ________, which introduces positive supercoils into the chromosome in order to protect the DNA from ________.

• A) reverse DNA gyrase; thermal denaturation
• B) DNA helicase; thermal denaturation
• C) topoisomerase I; gene overexpression
• D) DNA ligase; thermal denaturation
• E) reverse transcriptase; gene overexpression

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