Which Phenotypic Assay Could Be Used to Determine Whether a New

question 7

Multiple Choice

Which phenotypic assay could be used to determine whether a new Streptococcus sp.is of the pyogenes or viridans group?

• A) catalase assay with H₂O₂
• B) hemolytic type after growth on a blood agar plate
• C) occurrence of cells being in clusters or as individual cells under a microscope
• D) product(s) formed during lactose fermentation

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Definitions:

Maxilla

The paired upper jawbones that form the foundations of the middle face, supporting the upper teeth and playing key roles in breathing, eating, and speaking.

Cleft Lip

A congenital facial defect that occurs when the upper lip does not form completely, leading to a gap or split.

Mandible

The lower jaw or jawbone, the largest and strongest bone of the face, which holds the lower teeth in place and moves during chewing.

Freely Moveable Joint

Joints that allow extensive movement between bones, including hinge, ball-and-socket, and pivot types, enabling activities such as walking, grasping, and turning.