Select the Best Description of the Causative Agent of Diphtheria

question 80

Multiple Choice

Select the best description of the causative agent of diphtheria.

• A) Pleomorphic, Gram-negative lysogen.
• B) Gram-positive, spore-forming rod.
• C) Gram-positive, encapsulated, spore-former.
• D) Pleomorphic, Gram-positive lysogen.
• E) Pleomorphic, Gram-positive, flagellated lysogen.

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Definitions:

Vertex

A point where two or more curves, lines, or edges meet; in geometry, it is often used to refer to the corner point of a polygon or angle.

Parabola

A symmetrical open plane curve formed by the intersection of a cone with a plane parallel to its side; its general equation is \(y = ax^2 + bx + c\).

Focus

A point used in the definition of a curve or shape, such as an ellipse or parabola, that helps determine its form.

Ellipse

A curve on a plane surrounding two focal points such that the sum of the distances to the two focal points is constant for every point on the curve.