You Have Taken E

question 57

Multiple Choice

You have taken E. coli strain A which has its own plasmids, and mixed it with E. coli B strain without plasmids. E. coli B cells now have plasmids but, in addition, they also carry some genes from E. coli A strain. What has happened is

• A) the E. coli B cells have become mutants of the original culture.
• B) vertical transmission of DNA has occurred.
• C) an example of transformation.
• D) the cells of E. coli A were Hfr cells.

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Definitions:

LUMO

The Lowest Unoccupied Molecular Orbital is the orbital with the lowest energy level capable of accepting an electron.

1,3-Butadiene

An organic compound that is a simple conjugated diene with the formula C4H6, known for its role in the production of synthetic rubber.

Allylic Carbons

Atoms of carbon that are positioned next to a carbon-carbon double bond in a molecule, often exhibiting unique reactivity due to their position.

Cholesterol

A waxy substance found in the lipids (fats) in the blood, essential for the creation of vitamin D, steroid hormones, and bile acids, but high levels can lead to health risks.