Extremophiles are microorganisms that can survive and proliferate in extreme environments. One group of such microorganisms are lithotrophs. These are found deepbeneath the Earth's surface, living on rocks under anaerobic conditions and surviving on CO2 as their sole source ofcarbon.Imagine that you are studying a newly discovered lithotroph and are trying to determine what it uses as a source of electrons for reducing CO2 and for producing energy.Which one of the following conditions must be met for a molecule to serve as a useful electron donor?Oxidation of the molecule occurs with a decrease in free energy.Oxidation of the molecule occurs with an increase in free energy.Reduction of the molecule occurs with a decrease in free energy.O Reduction of the molecule occurs with an increase in free energy.

Oxidation means loss of electrons and reduction means the addition of electrons. To convert carbon…

Answered: Extremophiles are microorganisms that…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Similar questions

The figures below show the two different types of anaerobic respiration: alcoholic fermentation (left) and lactate fermentation (right). Read the descriptions in the table that follows, and then select whether each statement describes alcoholic fermentation, lactate fermentation, or both. Check all that apply. Generates two CO2 A. Lactate Fermentation B. Alcoholic Fermentation
Can someone explain to me what does Oxidation, Reduction and Redox reaction means in terms of cellular respiration? I am having a hard time understanding the core concept.
The following image is a schematic of the metabolic processes occurring in a plant contained in a closed container. A=Light Dependent reactions B=Glycolysis C=Light Independent Reactions D=Kreb's cycle E=electron transport chain 2a) Use the figure above to explain the conditions in which the oxygen concentration remains constant in the container. b) 2-carboxyarabinitol-1,5-bisphosphate (CABP) is an inhibitor of the enzyme rubisco. Which pathway would this affect most?
During aerobic respiration, in heterotrophic organisms, which of the following is a substrate molecule that will be oxidized as it is converted into product molecules? diatomic oxygen carbon dioxide glucose water CO2
The anaerobic, chemoautotrophic archaeobacterium Methanococcus jannaschii uses which of the following carbon-fixation pathways to obtain organic carbon from CO2? cell bio the Hill reaction the Wood-Ljungdahl pathway the Calvin cycle oxygenic photosynthesis the Krebs cycle
The anaerobic, chemoautotrophic archaeobacterium Methanococcus jannaschii uses which of the following carbon-fixation pathways to obtain organic carbon from CO2? the Hill reaction the reductive acetyl-CoA pathway the Calvin cycle oxygenic photosynthesis the Krebs cycle
In a redox reaction, an atom or molecule loses excited electrons to become___and have__energy. In cellular respiration, NAD+ has __and NADH has___. 1)reduced or oxidized 2)low or high 3)low energy or high energy 4)low energy or high energy
Describe the following metabolisms (photolithoautotroph, chemolithoautotroph, chemoorganoheterotroph, and photoorganotroph) What is the carbon source for biomass for Autotrophs and Heterotrophs: What is the energy source for Chemotrophs and Phototrophs: What is the electron source for Lithotrophs and Organotrophs:
For questions 4 and 5 just say which kind they are (photoautotroph, chemoautotroph, photoheterotroph, or chemoheterotroph)
DCPIP (2,6-dichlorophenol-indophenol), a blue dye, can act as an electron acceptor and becomes colorless when reduced. A suspension of chloroplasts is prepared, and DCPIP is added to the suspension. The sample is split into two test tubes. One test tube is exposed to light and the other is wrapped in foil (dark control). What would you observe over time comparing the light exposed and the dark control test tubes? A. The sample exposed to light stays blue. The sample kept in the dark turns colorless. B. The sample exposed to light turns colorless. The sample wrapped in foil stays blue. C. Both samples stay blue. D. Both samples turn colorless.
The common name for species like Anabena is blue-green algae. This group of bacteria are capable of photosynthesizing. Do they contain chloroplasts? Explain.
Cellular respiration is a very challenging topic to learn. Instead of asking you many detailed questions about the process, I would rather you show me that you understand the big picture. Why is it necessary for all organisms to do cellular respiration? It doesn't matter if you are a top tier consumer like you and I or a simple decomposing yeast, all organisms must do some sort of cellular respiration. You can answer this by describing the overall purpose and outcome of cellular respiration. You are not required to get into minute details. I DELL

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