1. An infant presents with a severe rash from which areas of skin are beginning to peel off.
The physician first suspects child abuse, since the child appears to be suffering from skin
burns. But, a skin sample reveals abundant gram-positive cocci arrange
Figure 1 shows slightly curved, gram negative rods
Figure 2: Stool culture was grown in microaerophilic and
Fig 2 shows a yellowish colony which is beta hemolytic on
sheep blood agar
The bacteria could not survive
A man enters the emergency room claiming to have been
stabbed two days earlier. Muscles in his arm hurt, and on
palpation small air bubbles are felt below the skin. The wound
area exudes a blackish, ill-smelling fluid and generates
General Biology I (Bio 101)
End of Semester Exam
Example Exam Questions
Chemicals with local, short-lived effects are typically described as _ signals.
An important coenzyme in catabolism which accepts electrons/hydrogens is _.