The Enzyme Phosphofructokinase (PFK) Catalyzes a Key Step in Glycolysis

Multiple Choice

The enzyme phosphofructokinase (PFK) catalyzes a key step in glycolysis. About 10% of Springer spaniels suffer from canine PFK deficiency. Dogs affected with this disorder most likely display which of the following symptoms?

A) They die as embryos.
B) They constantly have low blood sugar.
C) They are lethargic and readily tire from exercise.
D) They carry out elevated levels of oxidative phosphorylation.