You Have Identified the Causative Organism of the Outbreak as E

question 53

Multiple Choice

You have identified the causative organism of the outbreak as E. coli. In an effort to characterize the strain of the organism involved, you do different tests. The results are as follows:
Gram stain-Gram-negative rods; Oxidase test-negative; Lactose fermentation-positive; Serological testing-O157:H7; Colony morphology-smooth, creamy colonies; RFLPs-E. coli O157:H7; Antibiogram-resistant to ampicillin.
Which test(s) confirm the identity of the organism at the strain level?

• A) Gram stain AND antibiogram
• B) Serological testing AND colony morphology
• C) RFLPs AND serological testing
• D) Oxidase test AND RFLPs
• E) Lactose fermentation AND oxidase test

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Definitions:

Gross Profit

The difference between revenue and the cost of making a product or providing a service, before deducting overheads, payroll, taxation, and interest payments.

Inventory Costing Method

A method used to assign costs to inventory, affecting how costs are reported in the financial statements.

Year-End Purchase

Acquisitions or purchases made by a company close to the end of its fiscal year, often impacting the annual financial statements.

LIFO Cost of Goods Sold

An inventory costing method where the last items placed in inventory are considered the first ones sold, affecting the cost of goods sold during a period.