Iron is a component of _____ that serve as electron carriers in energy metabolism
A)hemoglobin molecules
B)antioxidant enzymes
C)cytochromes
D)mitochondria

Question

Quizplus · Accepted Answer

Cytochromes are proteins that contain heme groups, which have iron atoms that are essential for accepting and donating electrons during energy metabolism. Hemoglobin is a protein in red blood cells that carries oxygen, not electrons. Antioxidant enzymes help protect cells from damage caused by free radicals and do not necessarily contain iron. Mitochondria are organelles that are involved in energy metabolism but do not necessarily contain iron themselves.

Iron Is a Component of _____ That Serve as Electron