Demystifying anaerobic respiration: a problem-solving exercise.
J Microbiol Biol Educ
; : e0004424, 2024 Aug 19.
Article
en En
| MEDLINE
| ID: mdl-39158290
ABSTRACT
Anaerobic respiration reactions are of fundamental importance to global biogeochemical cycling of elements. Yet, the idea that cellular respiration can occur not only in the absence of oxygen but also involve the oxidation of inorganic substrates (e.g., AsO33-, Fe2+, H2, H2S, Mn2+, NH3, and S0) is often foreign to many undergraduate students. This article describes a problem-solving exercise where students are introduced to the thermodynamic fundamentals of respiration with a particular focus on the role of redox (reduction-oxidation) potentials (E0´). In the exercise, the students investigate how the difference in redox potential (ΔE0´) between different pairs of reductants and oxidants affects the range of permissible microbial metabolic reactions in natural environments when oxygen is absent.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
J Microbiol Biol Educ
Año:
2024
Tipo del documento:
Article
País de afiliación:
Suecia
Pais de publicación:
EEUU
/
ESTADOS UNIDOS
/
ESTADOS UNIDOS DA AMERICA
/
EUA
/
UNITED STATES
/
UNITED STATES OF AMERICA
/
US
/
USA