During oxidative phosphorylation, H2O is formed. Where does the oxygen for the synthesis of the water come from?
A. Carbon dioxide (CO2)
B. Glucose (C6H12O6)
C. Molecular oxygen (O2)
D. Pyruvate (C3H3O3–)
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Energy released by the electron transport chain is used to pump H+ ions into which location?
A. Cytosol
B. Mitochondrial outer membrane
C. Mitochondrial intermembrane space
D. Mitochondrial inner membrane
Which statement is not correct with regard to redox (oxidation-reduction) reactions?
A molecule is reduced if it loses electrons.
B. A molecule is oxidized if it loses electrons.
C. An electron donor is called a reducing agent.
D. An electron acceptor is called an oxidizing agent.
Cell organelles are located within the ____ of the cell.
A. nucleus
B. cytoplasm
Cell membrane
D. lysosomes
The endoplasmic reticulum functions to:
A. transport materials
B. destroy old cell parts
C. make ribosomes
D. package proteins
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