Methicillin-Resistant Staphylococcus Aureus (MRSA) Has Developed Resistance to All ?β-Lactams

question 2

Multiple Choice

Methicillin-resistant Staphylococcus aureus (MRSA) has developed resistance to all ?β-lactams by what mechanism?

• A) Nonreactive receptor on the bacterial cell surface that binds the antibiotic
• B) Destruction of the β-lactam ring upon attachment to the mutated receptor
• C) Mutated protein that acts to hydrolyze β-lactams?
• D) Acquisition onto the penicillin-binding site of a novel protein called PBP2a.

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Definitions:

Bacteria

Bacteria are single-celled microorganisms with a wide range of shapes and metabolic capabilities, some of which are vital for ecological and human health.

Fungi

An empire of spore-generating life forms that subsist on organic material, covering a range that includes molds, yeast, various mushrooms, and toadstools.

Drosophila

A genus of small flies, commonly known as fruit flies, that are widely used as model organisms in the study of genetics and development.

Wing Length

The measurement of the wing from its base to its tip, an important factor in the flight capabilities and species identification of birds.