Question

on of life and Omission of life most extreme chaken an interes specialized Be carbon me extremopheeding" of honuments koran the poems of dealin poing to U Be tound in extreme environments, ranging from boiling hot springs to freczing arch ice. These bacteria, known as extremophiles, have specialized ways of dealing with the stresses in the environment. Recently, NASA has taken an interest in the potential for extremophiles to tolerate te space, one of the most extreme environments known This raises the possibility for intraplanctang transmission of life and "seeding" of life on planets by space rocks carrying extremophiles One of the extremophiles being investigated as a possible "space bug" can grow anaerobically on carbon monoxide, and produces only carbon dioxide and lodeogen gas as end products Because you are an expert in anaerobic respiration, NASA has hired you to decipher the electrice transport process used by this important organism. The redox couples for this process are: CO2/CO 2H+ H2 being investigated as a side and E'o= -0.52 V E'o= .0.41 V What is the electron donor? CO What is the electron acceptor? Write out the energy producing reaction: You have just isolated a novel chemoorpanotrophic bacterium from an anaerobic environment that contains an abundance of hydrogen sulfite, acctate and lactate. As part of a DOE nt to further elucidate the metabolism of this organism, you have been asked to propose pure potential or possible) electron transport chain that would allow this organism to extract the most energy from the available resources using a SINGLE electron donor and to produce the MOST ATP given it's environment. The potential redox couples for this process are: On To begin your research you need to identify the SO4 / HSO E'o= -0.52 CO/acetate E'o= -0.28 V Pyruvate/lactate E'o- -0.19V NOS / NO2 E'o= +0.42 12 Oz / H2O E'o= +0.82 following (A) What would be the electron donor? CO (B) What would be the electron acceptor? (C) Write the energy producing reaction: What if this organism was a chemolithotroph and this was aerobic environment? (A) What would be the electron donor? HSOS (B) What would be the electron acceptor? (C) Write the energy producing reaction:

please do

Answer 1

Answer:

Electron donor: 2H⁺/H₂

Electron acceptor: CO₂/CO

Energy producing reaction: H₂S + 2O₂-------------> 2S + 2H₂O + 4e^-

                        The upper reaction coupled with fixation of CO2 to form sucrose

6CO₂ + 24H⁺ + 4e^- -------------> C₆H₁₂O₆ + 6H₂O

1. Electron donor : SO₄/ HSO₃^-
2. Electron acceptor: ½ O2/ H₂O
3. Energy producing reaction: H₂S + 2O₂ ---------> SO4^2- + 2H⁺ + 8e^-

If the organism was a chemolithotrop and this was aerobic environment

1. Electron donor : SO₄/ HSO₃^-
2. Electron acceptor: ½ O2/ H₂O
3. Energy producing reaction: H₂S + 2O₂ ---------> SO4^2- + 2H⁺ + 8e^-