The Krebs (citric acid) cycle produces ______, ______, and carbon dioxide.
glucose, oxygen
oxygen, ATP
ATP, electron carriers
electron carriers, oxygen
Question 7 (1 point)
What is the oxidized form of the most common electron carrier that is needed for both glycolysis and the Krebs cycle?
ATP
FAD
pyruvate
NAD+
NADH
Question 8 (1 point)
Which of the following statements describes NAD+?
In the absence of NAD+, glycolysis can still function.
NAD+ has more chemical energy than NADH.
NAD+ can donate electrons for use in oxidative phosphorylation.
NAD+ is reduced to NADH during glycolysis, pyruvate oxidation, and the citric acid cycle.
Question 9 (1 point)
In the absence of oxygen, can cells utilize the electron transport chain?
Yes, all cells can make use of the electron transport chain in the absence of oxygen via fermentation.
No, oxygen is a required cofactor for the complexes in the electron transport chain.
Yes, in the case that a cell can use a terminal electron acceptor other than oxygen, it can make use of the electron transport chain.
No, oxygen is the primary electron acceptor in electron transport chains.