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Quiz 8
Ch 8
Name________________________
Remote # ____________
6. Which pathway produces the most
ATP per glucose molecule?
a. fermentation
b. glycolysis
c. Krebs cycle
d. cellular respiration
e. electron transport and chemiosmosis
1. In eukaryotic cells, glycolysis occurs
in the __________, and cellular
respiration occurs in the __________.
a. mitochondria, cytoplasm
b. cytoplasm, mitochondria
c. cytoplasm, chloroplasts
d. chloroplasts, mitochondria
2. The overall equation for glucose
metabolism is C6H12O6 + 6O2 --> 6CO2
+ 6H2O + ATP and heat. The carbon
atoms in the CO2 molecules in this
equation come from __________ during
reactions of __________.
a. O2, glycolysis
b. O2, the electron transport system
c. O2, the Krebs cycle
d. C6H112O6, glycolysis
e. C6H12O6, the Krebs cycle
7. How many molecules of ATP would
be produced from 20 molecules of
glucose at the end of fermentation?
a. 10
b. 20
c. 30
d. 40
e. 100
8. In the absence of oxygen, pyruvate
acts as an electron acceptor in a
process called ___________________.
a. hydrolysis
b. fermentation
c. oxidative phosphorylation
d. glycolysis
3. Where is most of ATP produced?
a. in fluid surrounding all cells
b. in the cytoplasm of a cell
c. in the mitochondria of a cell
d. on the rough endoplasmic reticulum
9. Electrons from NADH and FADH2 are
deposited in the __________________.
a. cytoplasm
b. electron transport system
c. matrix
d. outer membrane of the mitochondria
4. How do cells recycle NADH back to
NAD+ during fermentation?
a. by converting pyruvate to lactic acid
b. by converting pyruvate to ethanol and
carbon dioxide
c. by converting pyruvate to acetyl CoA
d. The first two answers are correct.
10. ____________________ is the
process in which hydrogen ions move
down their concentration gradient
through ATP-synthesizing enzymes.
a. substrate level phosphorylation
b. facilitated diffusion
c. outer phosphorylation
d. chemiosmosis
5. The production of what molecule
marks the end of glycolysis and the
beginning of cellular respiration?
a. Coenzyme A (CoA)
b. acetyl CoA
c. citrate
d. pyruvate
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