Final answer:
The culture described with a ground-glass appearance and comma-shaped projections is indicative of c. Corynebacterium diphtheriae, the bacterium responsible for diphtheria.
Step-by-step explanation:
The culture in question exhibits a ground-glass appearance and comma-shaped projections, with a consistency that stands up like beaten egg white when touched with a loop. These characteristics are indicative of the bacterium c. Corynebacterium diphtheriae, which is known to form distinctive palisades, and contains diaminopimelic acid in its cell walls.
Corynebacterium diphtheriae is also the causative agent of the potentially fatal disease, diphtheria, which is identified by its toxin production leading to a pseudomembrane in the throat.