Question

In: Chemistry

Select the electron carriers involved in the electron-transport chain?? 1. flavin mononucleotide 2. cytochrome C 3....

Select the electron carriers involved in the electron-transport chain??

1. flavin mononucleotide
2. cytochrome C
3. glyceraldehyde-3-phosphate
4. glucose
5. iron-sulfur clusters
6. phosphate

Solutions

Expert Solution

The electron transport chain (ETC) is the major consumer of O2 in mammalian cells. The ETC passes electrons from NADH and FADH2 to protein complexes and mobile electron carriers. Coenzyme Q (CoQ) and cytochrome c (Cyt c) are mobile electron carriers in the ETC, and O2 is the final electron recipient.

Some compounds like succinate, which have more positive redox potential than NAD+/NADH can transfer electrons via a different complex—complex II. Coenzyme Q, or simply Q, can travel within membrane while Cyt C is a soluble protein. Flavoproteins are components of complexes I and II and Fe-S is present in complexes I, II, and III. The Fe atom present in Fe-S complexes helps in electron transfer by shifting from Fe2+ to Fe3+ states.

IF SINGLE OPTION IS ONLY CORRECT THEN CHOOSE CYTOCHROME C IF MULTIPLE ARE CORRECT THEN GO FOR CYTOCHROME C AND Fe-S CLUSTER

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