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Cellular Respiration Test

Terms in this set (25)

In the following reaction, glucose is ______________ to form carbon dioxide while oxygen is ______________ to form water. C6H12O6 + 6O2 --- 6CO2 + 6H20 + ATP
oxidized, reduced
Chemiosmosis refers to the idea that an ion flowing down its electrochemical gradient drives ATP synthesis. This ion is
Hydrogen ion
The overall yield of one turn of the Kreb's cycle is
2 CO2, 1 ATP, 3 NADH, and 1 FADH2
Which pair of compounds is reduced in the Krebs cycle by accepting electrons and protons
NAD+ and FAD
What organ in the body converts lactic acid into pyruvate
Liver
During strenuous exercise, lactic acid is produced by human muscles in order to regenerate
NAD+
As electrons are passed down the electron transport chain, the energy released is used to pump
ions from the mitochondrial matrix into the intermembrane space.
In the process of oxidative-phosphorylation ________ is oxidized and _________ is phosphorylated
NADH; ADP
The principle electron carriers of the electron transport chain are
cytochromes and coenzymes
When the poison cyanide blocks the electron transport chain, pyruvate oxidation and the Kreb's cycle grind to a halt. Why do you think they stop
They run out of NAD+ and FAD
How many molecules of ATP are produced per molecule of FADH2 oxidized by electron transport
Two
Identify the correct sequence of processes in the oxidation of glucose
Glycolysis, the Krebs Cycle, electron transport
Electrons moving to lower energy levels along the electron transport chain provide the energy to
Establish an electrochemical gradient
In which of the following is the first molecule reduced to the second
Pyruvate--->Lactic Acid
Two coenzymes that are energetically important as electron carriers are
NAD+ and FAD
Lactic acid is formed during
Fermentation
How many turns of the Krebs cycle are required to oxidize all of the carbons from s molecule of glucose entering glycolysis
Two
For every glucose molecule oxidized aerobically by a cell, . . . . acetyl groups enter the Krebs cycle
Two
Which of the compounds is (are) NOT involved in the electron transport
Acetyl CoA
What yeast cells metabolize glucose anaerobically, the end product is
Ethyl Alcohol
Glycolysis is the most closely linked with which part of the cell
Cytosol
Before its oxidation in the Krebs cycle, pyruvate must first undergo a reaction that produces
1 Acetyl-CoA, 1 NADH and 1 CO2
The folds of the inner membrane are called
Cristae
A biochemist wanted to study how various substances were used in cellular respiration. In one experiment, he allowed a mouse to breathe air containing O2 "labeled" by a particular isotope. IN the mouse, the labeled oxygen first showed up in
H2O
The percentage of alcohol in wine does not exceed 14% because
The yeast is poisoned and killed by levels above 14%
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