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12 Cards in this Set

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Organic molecules that have an abundance of hydrogen are excellent fuels because their bonds are a source of
electrons located at the top with the potential to "fall" closer to the oxygen
In respiration, hydrogen is transferred from glucose to
oxygen
The main engery foods are
carbohydrates and fats, which are resevoirs of electrons associated with hydrogen
at key steps, hydrogen atoms are stripped from______, but not directly transferred to_____. They are usually passed first to _______ called ____+.
glucose, oxygen, coenzyme, NAD+
NAD functions as_______.
NAD functions as an oxidizing agent, during respiration.
a neutralized NAD+, it has received two _______, and one _______, forming ______.
2 electrons, 1 proton, NADH.
NADH molecule formed during respiration represents stored energy that can be used to make ______ after the electrons complete their cycle at the electron transport chain.
ATP
First, in cellular respiration, the hydrogen that reacts with _____ is derived from organic molecules.
oxygen
SEcond, respiration uses the ____________ to break the fall of electrons to oxygen into several energy releasing steps instead of one explosive reaction.
electron transport chain
_____ captures the electrons along with hydrogen nuclei, forming water.
oxygen
Oxygen has a great ______- for electrons.
affinity
most electrons travel this "downhill" route:
food -> NADH -> electron transport chain -> oxygen.