An electron transport chain consists of three cytochromes with the following standard redox potentials:
Cytochrome a (Fe3+) /Cytochrome a (Fe2+) +290
Cytochrome b (Fe3+) /Cytochrome b (Fe2+) +120
Cytochrome c (Fe3+) /Cytochrome c (Fe2+) +220
Which cytochrome in the chain is most likely to donate electrons to the final electron acceptor (e.g. O2) ?
A) Cytochrome a (Fe3+)
B) Cytochrome a (Fe2+)
C) Cytochrome b (Fe2+)
D) Cytochrome c (Fe3+)
E) Cytochrome b (Fe 3+)
Correct Answer:
Verified
Q23: An enzyme catalyses the breakdown of a
Q24: ATP
A) is the only energy carrier in
Q25: The reaction NAD+ + Pi ====> NADH
Q26: The reduction of a compound involves
A) addition
Q27: The purpose of the cytochromes in electron
Q29: Which of the following is the best
Q30: Which of the following statements about enzyme
Q31: The direction of a biological reaction is
Q32: The role of an enzyme in an
Q33: The specificity of an enzyme is due
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents