A New IS Element Is Found in Bacteria

question 33

Multiple Choice

A new IS element is found in bacteria. Which of the following pairs of DNA sequences would MOST likely be found at each end of the IS element? (Only one of the two DNA strands is given.)

• A) 5´-GAGACTCTAC-3´ and 5´-GAGACTCTAC-3´
• B) 5´-GAGACTCTAC-3´ and 5´-CATCTCAGAG-3´
• C) 5´-GAGACTCTAC-3´ and 5´-CTCTGAGATG-3´
• D) 5´-GAGACTCTAC-3´ and 5´-GTAGAGTCTC-3´
• E) 5´-GAGACTCTAC-3´ and 5´-CAGACTCTAG-3´

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Definitions:

Isobutylene

A four-carbon branched alkene, also known as isobutene, used in the production of various polymers and chemicals.

Methyl α-methacrylate

An ester used as a monomer in the production of poly(methyl methacrylate) (PMMA) and other acrylic plastics.

Carbon

A chemical element with symbol C and atomic number 6, which is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds.

Hydrogen Mole Ratio

The ratio of the number of moles of hydrogen in a compound or reaction to some other specified component or the overall reaction.