Which of the following is TRUE regarding heme proteins? I. Heme groups are capab

Question

Which of the following is TRUE regarding heme proteins?

I. Heme groups are capable of transferring electrons across large distances provided that some molecular network exists as a "path."

II. Heme groups are often buried in protein structure because the protein protects the heme and prevents it from indiscriminately transferring electrons.

III. The rate of electron transfer from a reduced heme is physiologically significant.

IV. Heme groups are often differentiated by their absorption spectrum.

Explanation / Answer

All of the statements given above are true.

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