A Weil-Felix Test Was Performed on Serial Dilutions from a Patient

question 8

Multiple Choice

A Weil-Felix test was performed on serial dilutions from a patient bitten by a tick.The results obtained were positive for OX-19 and negative for OX-2 and OX-K.Based on these findings,the organism can be identified as:

• A)R.rickettsii.
• B)O.tsutsugamushi.
• C)Rickettsia prowazekii.
• D)Rickettsia typhi.

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Definitions:

Replication

The process by which genetic material or a biological entity reproduces or makes a copy of itself.

Thrifty Genotype Hypothesis

The proposition that certain genotypes predispose individuals to efficient fat storage for survival during times of food scarcity, which may predispose to obesity in environments with abundant food.

Positive Selection

A process in evolution where advantageous genetic mutations become more common in a population because they contribute to survival and reproduction.

Diabetes

A group of metabolic diseases characterized by high blood sugar levels over a prolonged period, resulting from defects in insulin production or action.