Glycolysis Flashcards
What type of reaction is catalyzed by
phosphofructokinase?
Phosphoryl transfer
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
Where does the citric acid cycle take place?
The citric acid cycle (Krebs’ cycle) occurs within the
mitochondria of eukaryotic cells.
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
How many turns of the Krebs cycle does it take to
completely oxidize 1 glucose?
Two turns since glycolysis normally produces 2 pyruvate.
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
What must be present for both the Krebs cycle and
the electron transport system to function?
Oxygen
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
What is the maximum number of ATPs you can get
from 1 mole of glucose?
38
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
Where does the Krebs cycle and the electron
transport reactions occur?
In the mitochondria
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
Excluding any products of glycolysis or the electron
transport system, what are the final products of a
single turn of the Krebs cycle?
4 NADH, 1 FADH, and 1 ATP.
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
If the electron transport system isn’t working, how
many ATPs can glycolysis and the Krebs cycle
produce?
4 ATP
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
If glycolysis is working correctly and the Krebs cycle
and electron transport system are not used, what are
the final products produced?
2 ATP, 2 NADH, and 2 Pyruvate
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
What type of reaction is catalyzed by glyceraldehyde-
3 phosphate dehydrogenase?
Phosphoryl transfer
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
What type of reaction is catalyzed by
phosphoglucose isomerase?
Isomerization
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
What type of reaction is catalyzed by
phosphoglycerate kinase?
Phosphoryl transfer
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
What is the starting product for the Kreb’s cycle and
what compound is necessary for its formation?
AcetylCoA which is formed from pyruvate.
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
What type of reaction is catalyzed by hexokinase?
Phosphoryl transfer
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.
What is oxidative phosphorylation?
Oxidative phosphorylation describes a series of electron
transfers that lead to the formation of adenosine triphosphate.
Oxidative phosphorylation is responsible for about 90% of all
oxygen consumed in the body.
Guyton AC, & Hall, JE. Textbook of Medical Physiology. 12th
ed. Philadelphia: Saunders; 2011: 813-817.