Chapter 9 Flashcards
Which part of the catabolism of glucose by cellular respiration requires molecular oxygen (O2) and produces CO2?
Which of the following metabolic pathways produce(s) the most ATP, per glucose molecule metabolized, during cellular respiration?
The electron transport chain and oxidative phosphorylation
In preparing pyruvate to enter the citric acid cycle, which of the following steps occurs?
Pyruvate is oxidized and decarboxylated, and the removed electrons are used to reduce an NAD+ to an NADH.
A molecule becomes oxidized when it
loses an electron
The energy from the electrons in NADH and FADH2 fuel what process in the electron transport chain?
The pumping of H+ through the ATP Synthase
Most of the electrons removed from glucose by cellular respiration are used for which of the following processes?
Reducing NAD+ to NADH in glycolysis and the citric acid cycle AND producing a proton gradient for ATP synthesis in the mitochondria.
Which part of the catabolism of glucose by cellular respiration requires molecular oxygen (O2) and produces CO2?
The combination of the citric acid cycle and electron transport
Glycolysis (production count)
1 Glucose = 2 ATP, 2 NADH
Substrate-level phosphorylation
a metabolic process in which a phosphate group (PO₄) is transferred directly from a phosphorylated substrate molecule to ADP
Fermentation
A partial degradation of sugars and other organic fuels without the use of oxygen
Reduction
Gains electron, is Oxidated
Oxidation
Loses electron, is reduced
Dehydrogenases
an enzyme that catalyzes the removal of hydrogen atoms from a particular molecule, particularly in the electron transport chain reactions of cell respiration in conjunction with the coenzymes NAD and FAD.
How much ATP per glucose
32
