Chp6 Cellular Respiration Flashcards
What is cellular respiration
process of extracting energy from sugar/food
What is the overall reaction for cellular respiration
C6H12O6+ 6 o2 —-> 6 Co2 + 6 H2o + approx 32 ATP + Heat
Where in the cell does glycolysis take place
cytoplasm,
What are the reactants and products of glycolysis?
Glucose + 2ATP —-> 2ATP NET, 2NADH, 3 molecules of pyruvic acid
What happens to pyruvate at the end of glycolysis?
The pyruvic acid still holds most of the energy of glucose, and that energy is harvested in the second stage of cellular respiration, the citric acid cycle.
What are the reactants and products of the connecting step (pyruvate oxidation step/step between glycolysis and citric acid cycle)?
The pyruvic acid still holds most of the energy of glucose, and that energy is harvested in the second stage of cellular respiration, the citric acid cycle.
What is the name of the 2 carbon molecule that enters the citric acid cycle
Acetyl CoA is a reactant in the citric acid cycle
What are themajorproducts of the citric cycle? Where does it take place in the cell?
Matrix of mitochondria.
2 Co2, ATP, 3 NADH-, FADH2-
What is the electron transport chain (ETC) made of and why is it important? Where is it located?
Series of 4 protein complexes. creates an electrochemical gradient that leads to the creation of ATP.
occurs in mitochondria,
What is substrate level phosphorylation?
Produces ATP during the citric acid cycle
Which are the two molecules that carry energy to the electron transport chain from the Krebs cycle?
FADH2 and NADH
Where is ATP synthase located in the mitochondria?
the Mitochondria
What is the final electron acceptor at the end of ETC?
Oxygen accepts the electrons after it is pass through the Electron transport chain.
What is chemiosmosis
pumping of protons through special channels in the membranes of mitochondria.
What stage of cellular respiration produces most ATP?
the kerbs cycle produces the CO2 that you breath out. produces the most energy, 34 ATP molecules)
What is fermentation?
Used by Cells in times of oxygen shortage and by humans to produce foods and beverages
In cellular respiration, most ATP is produced directly as a result of…
the movement of hydrogen ions across the inner mitochondrial membrane
Oxidation is..
the loss of electrons; reduction is the gain of electrons.
Which of the following statements is a correct distinction between autotrophs and heterotrophs?
Only autotrophs can live on nutrients that are entirely inorganic.
Cells can harvest the most chemical energy from which of the following?
a glucose molecule
Sports physiologists at an Olympic training center want to monitor athletes to determine at what point their muscles are functioning anaerobically. They can do this by checking for a buildup of
lactic acid.
Which of the following is the correct sequence of stages in cellular respiration?
glycolysis, citric acid cycle, electron transport
A product of glycolysis is ______
pyruvic acid
Which part of cellular respiration produces the most NADH
citric acid cycle
In cellular respiration, most ATP is produced directly as a result of ______.
the movement of hydrogen ions across the inner mitochondrial membrane
The final electron acceptor of aerobic respiration is ______.
oxygen
Which of the following statements is true?
Oxidation is the loss of electrons; reduction is the gain of electrons.
