Concept explainers
a.
To explain: For which test (triglycerides, tryptophan, casein, starch, and urea), the organism Propionibacterium acne would give a positive result.
Introduction: Propionibacterium acne is a rod-shaped Gram-positive bacterium. It is an aerotolerant aerobic and slow-organism, which is acne’s etiologic agent.
b.
To explain: For which test (triglycerides, tryptophan, casein, starch, and urea), the organism Helicobacter pylori would give a positive result and explain if this activity has advantages.
Introduction: Helicobacter pylori, which are gastric ulcers’ etiologic agent, are spiral-shaped bacteria that grow in the digestive tract. It causes infections such as peptic ulcers and gastritis.
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