Which molecules can serve as electron donors to an electron transport chain during respiration? Select all...

Which molecules can serve as electron donors to an electron transport chain during respiration?

Select all that apply.

Group of answer choices

Elemental sulfur (S0)

Hydrogen gas (H2)

Ferrous iron (Fe2+)

Oxygen gas (O2)

Sulfate (SO42-)

NADH

Nitrate (NO3-)

Solutions

Expert Solution

Electron donors are the species that can donate electrons and get itself oxidize.

Sulpher not donate electrons and get converted to S+

H2 can donate electrons and converted into H+.

Fe2+ can donate electrons can get converted into Fe3+.

O2 cannot donate electrons as it is already in its maximum oxidize state.

Sulfate (SO42-) Can donate electrons and get converted to H2S.

NADH -It can donate electrons and get converted to NAD+

Nitrate (NO3-) -It can donate electrons and gets converted to NO2- or N2.

So correct answers are

Elemental sulfur (S0)

Hydrogen gas (H2)

Ferrous iron (Fe2+)

Sulfate (SO42-)

NADH

Nitrate (NO3-)

Pleas write to me if you need more help.

gladiator answered 1 year ago

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