Why does lack of oxygen result in the halt of ATP synthesis?
a. It causes one of the cytochromes in the electron transport chain to be permanently stuck in the reduced state.
b. Oxygen prevents uncoupling of the electron transport chain.
c. The chain shuts down and can no longer pump hydrogen ions across the membrane, and the proton gradient cannot be maintained.
Answer: c. The chain shuts down and can no longer pump hydrogen ions across the membrane, and the proton gradient cannot be maintained.
You might also like to view...
What is the proton-motive force?
a. the force needed to move protons into the inner mitochondrial space b. the amount of energy required to protonate a glucose molecule c. the free energy associated with the removal of hydrogen from NADH d. the combination of a proton and voltage gradient across the membrane e. the synthesis of ATP from a proton gradient
The ultimate factor affecting primary productivity is ____.
A. the organic matter in all the organisms of the ecosystem B. the availability of water C. the rate of photosynthesis D. the availability of ATP E. the amount of inorganic mineral ions in the soil
Chickenpox and measles are both acquired by the respiratory route
Indicate whether this statement is TRUE or FALSE.
A ___________ is a lump of abnormal cells that, although growing out of control, remains at its original site.
Fill in the blank(s) with the appropriate word(s).