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…

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter13: Early Life Forms And The Viruses

Section: Chapter Questions

Problem 3SQ

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