bio hw 10.1

bio hw 10.1 - Biology 201 Homework for chapter 9 1...

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Biology 201. Homework for chapter 9 1. Carefully define what is meant by oxidation and reduction. What is meant when we say that in biological systems, these two processes happen at the same time, and will not occur independently? If a molecule (molecule A) is oxidized by a different molecule (Molecule B), with which molecule do the transferred electrons have higher energy? Which molecule binds them more tightly? Is the transfer of these electrons endothermic or exothermic? Oxidation is the loss of electrons from an atom during a redox reaction either by donating them or by sharing in covalent bonds moving farther from nucleus, while reduction is the gain of electrons by accepting them or sharing in covalent bonds as well, but moving closer to nucleus in this case. Redox reactions have to have two different compounds, of which one of them will donate electrons while the other one will accept them, so they cannot occur independently. The molecule that has received the electrons, molecule B is now at higher energy, A will bind more tightly, and the transfer will be exothermic. 2.
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This note was uploaded on 04/02/2008 for the course BIO 201 taught by Professor Hofkin during the Spring '06 term at New Mexico.

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bio hw 10.1 - Biology 201 Homework for chapter 9 1...

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