Spontaneous Mutations Occur in the B-Lactamase Genes That Result in Extended-Spectrum

question 4

Multiple Choice

Spontaneous mutations occur in the b-lactamase genes that result in extended-spectrum β-lactamases (ESBL) .These ESBL inactivate:

• A) Cephalosporins
• B) Penicillins
• C) Aztreonam
• D) All of the above

---

Definitions:

Skeletal Muscle

A type of striated muscle tissue which is attached to bones and is responsible for their movement.

Smooth Muscle

Involuntary, non-striated muscle found in the walls of internal organs and blood vessels, responsible for their contraction and movement.

Cardiac Muscle

A specialized type of muscle found only in the heart, characterized by its endurance and ability to contract continuously without fatigue.

Skeletal Muscle

Skeletal muscle is a type of muscle tissue that is attached to bones and helps in voluntary movements by contracting and relaxing.