The Difference Between MDR-TB and XDR-TB Is That _______

question 52

Multiple Choice

The difference between MDR-TB and XDR-TB is that _______.

• A) XDR-TB is predominantly seen in the USA whereas MDR-TB is common in India and China
• B) MDR-TB exhibits resistance to isoniazid and rifampin whereas XDR-TB strains are resistant to bedaquiline
• C) MDR-TB strains have a higher mortality rate than XDR-TB strains
• D) MDR-TB strains are classified as having resistance to two antibiotics, whereas XDR-TB strains are classified when they are resistant to four antibiotics

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Definitions:

Increasing Basicity

A qualitative term describing the trend or pattern observed as the basic character (ability to accept protons) of a series of compounds increases.

Acid-Base Pair

A set of two substances that transform into each other by the gain or loss of a proton.

Increasing Acidity

Refers to a trend or condition that leads to an increase in the acidic character or strength of substances.

Conjugate Acid

A species formed by the reception of a proton by a base, characterized by having one more proton and an increased positive charge compared to the original base.