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1. Some aerobic bacterial species have respiratory chains with fewer components

ID: 101756 • Letter: 1

Question

1. Some aerobic bacterial species have respiratory chains with fewer components than those in mammalian respiratory chains. Which other characteristic would you expect to differ between these bacteria and mammalian cells? (2 points) a. The mechanism of ATP synthase in forming ATP b. The production of a hydrogen ion gradient across a membrane c. The arrangement of respiratory proteins in a series to facilitate electron transfer d. The quantity of ATP synthesized per electron passed down the respiratory chain e. The free energy change associated with the oxidation of NADH to NAD+ by oxygen

Explanation / Answer

E- free energy change associated with oxidation of NADH to NAD+ by oxygen..

The electron enters from different levels of dehydrogenase, quinone or at a cytochrome level. These level successfully corresponds to the more redo potential relative to terminal electron acceptor and these corresponds to smaller free energy changes from donor to acceptor reaction.

A is wrong because mechanism of ATP synthesis is the same in bacteria and eukaryotes l.

B is wrong because hydrogen ion gradient is the same because number of ATPs produced are also same.

C The arrangement of electrons transport is the same just some of the subunits are less than the eukaryotes.

D is wrong because quantity of electron is also the same