Hydrogen-Generating Reactions in Syntrophus and Syntrophomonas Have DG°' > 0

question 55

Multiple Choice

Hydrogen-generating reactions in Syntrophus and Syntrophomonas have DG°' > 0. Can these organisms obtain energy from hydrogen formation?

• A) No, they cannot.
• B) No-they produce energy by breaking down molecules such as benzoate or butyrate.
• C) Yes-hydrogen-producing microorganisms coexist in syntrophy with H₂-consuming bacteria. Utilization of H₂ (DG°' < 0) drives the process forward.
• D) Yes, but only when oxygen is present.
• E) Yes-this happens in sewage but never in a laboratory setting.

---

Definitions:

Selective Serotonin Reuptake Inhibitors

A class of drugs commonly used as antidepressants in the treatment of major depressive disorder, anxiety disorders, and some personality disorders.

Fragile X Syndrome

A genetic disorder causing intellectual disability, behavioral challenges, and characteristic physical features.

Phenylketonuria

A rare inherited disorder that increases the levels of a substance called phenylalanine in the blood, leading to intellectual disability and other health issues unless managed by diet from an early age.

Phenylalanine

An essential amino acid found in the human body used by the body to produce proteins and other important molecules, which is obtained through the diet.