Aquifex Cannot Use Which of the Following as Electron Donors

Question

Aquifex cannot use which of the following as electron donors?
A)Hydrogen
B)Thiosulfate
C)Sulfur
D)Glucose

Accepted Answer

Aquifex is a hyperthermophilic bacterium that uses hydrogen as an electron donor for chemolithotrophic growth. It cannot utilize thiosulfate or sulfur as electron donors, but it can use glucose as a carbon source for heterotrophic growth.