Which of the following is a coenzyme associated with cellular respiration A' NAD B' O2 C' FAD D' bot

1
Which of the following is a coenzyme associated
with cellular respiration? A. NAD
B. O2 C. FAD D. both A
and C
___
2
Since glucose is a high-energy molecule and its
metabolites, CO2 and H2O are low-energy
molecules, the breakdown ofglucose would be
described as an _____ reaction. A.
exergonic B. endergonic
___
3
NAD is _____ when it accepts two electrons and a
hydrogen ion (H). A. reduced
B. oxidized
___
4
About _____ of the energy in glucose is
transformed into ATP. A. 5
B. 40 C. 75 D. 100
___
5
Which of the following statements correctly
describes glycolysis? A. Glycolysis
occurs in the mitochondria. B.
glycolysis requires O C. Glycolysis
produces two molecules of pyruvate. D.
all of the above
___
6
Which of the following is not a product of the
complete breakdown of glucose? A. O2
B. CO2 C. ATP D. H2O
___
7
The first phase of glucose metabolism is _____.
A. the Krebs cycle B.
glycolysis C. the electron transport
system D. the transition reaction
___
8
The coenzymes NAD and FAD carry electrons to the
_____. A. nucleus B. Krebs
cycle C. plasma membrane D.
electron transport system
___
9
Since it is universally found in organisms,
researchers believe_____ evolved first.
A. the electron transport system B.
Krebs cycle C. glycolysis
___
10
The inputs of glycolysis include _____.
A. glucose B. NAD C. ATP
D. all of the above
___
11
When a phosphate is transferred from a
high-energy molecule of ADP to form ATP it's
referred to as _____. A.
photophosphorylation B. substrate-level
phosphorylation C. oxidative
phosphorylation
___
12
Glycolysis occurs in the _____. A.
cytosol B. matrix C. cristae
D. nucleus
___
13
There is/are _____ pyruvate molecule(s) produced
per glucose molecule during glycolysis.
A. one B. two C. six
D. ten
___
14
If oxygen is not available _____ follows
glycolysis. A. fermentation
B. the transition reaction C. the Krebs
cycle D. the electron transport system
___
15
When oxygen is available, pyruvate enters the
_____. A. nucleus B.
chloroplast C. plasma membrane
D. mitochondria
___
16
Each of the two pyruvates produced during
glycolysis has _____ carbons. A. 3
B. 6 C. 12 D. 36
___
17
Which of the following is NOT a product (an
output) of glycolysis? A. NADH
B. pyruvate C. CO2 D. ATP
___
18
The "after taxes" (net gain) number of ATP
produced during glycolysis is _____.
A. 1 B. 2 C. 4 D.
32
___
19
The ATP produced during glycolysis are produced
by _____. A. substrate-level
phosphorylation B. oxidative
phosphorylation C. photophosphorylation

___
20
The enzymes of the transition reaction and Krebs
cycle are located in the _____. A.
cytosol B. matrix C. cristae
D. thylakoids
___
21
The __________ connects glycolysis to the Krebs
cycle. A. electron transport system
B. transition reaction C.
cristae D. mitochondrial intermembrane
___
22
When electrons are removed from pyruvate in the
transition reaction, they are accepted by _____.
A. acetyl Co-A B. FAD
C. NAD D. ATP
___
23
Acetyl Co-A is formed during the transition
reaction by attaching _____ to a two-carbon
acetyl group. A. NAD B.
coenzyme A C. pyruvate D.
oxaloacetate
___
24
The first metabolite of the Krebs cycle is
__________. A. lactate B.
pyruvate C. oxaloacetate D.
citrate
___
25
Which of the following is an output of the Krebs
cycle? A. CO2 B. ATP
C. FADH2 D. all of the above
___
26
Which of the following Krebs cycle products is
disposed of by our respiratory system when we
exhale? A. CO2 B. ATP
C. NADH D. FADH2
___
27
The electrons that enter the electron transport
system are carried there by _____. A.
NADH B. FADH2 C. both A and B

___
28
The energy released by the electron transport
system produces ATP by _____. A.
photophosphorylation B. substrate-level
phosphorylation C. oxidative
phosphorylation
___
29
The electron transport system is located in the
_____. A. stroma B. matrix
C. cytosol D. cristae
___
30
When O2 is reduced during the electron transport
system, _____ is produced. A. H2O
B. CO2 C. ADP D. glucose

___
31
When NADH produced during the transition reaction
and Krebs cycle delivers electrons to the
electron transport system,_____ ATP is/are
produced. A. 1 B. 2
C. 3 D. 36
___
32
The final electron acceptor in the electron
transport system is _____. A. FADH2
B. O2 C. coenzyme Q D.
cytochrome b
___
33
How many ATP molecules are produced when FADH2
delivers electrons to the electron transport
system? A. 1 B. 2
C. 4 D. 36
___
34
Oxygen debt is _____. A. the amount of
oxygen needed to get rid of lactate B.
the amount of oxygen needed for cellular
respiration C. the amount of oxygen
needed for glycolysis D. the amount of
oxygen the US owes Japan
___
35
Animal cells perform _____ fermentation.
A. lactate (lactic acid) B. alcoholic
C. both A and B
___
36
The product of alcoholic fermentation that allows
us to make bread is _____. A. O2
B. CO2 C. H2O D. lactate
___
37
During fermentation, _____ is regenerated and it
returns to glycolysis to pick up more electrons.
A. ATP B. glucose
C. NAD D. pyruvate
___
38
Athletes' cells _____. A. metabolize
more fats for ATP which maintains blood glucose
levels B. have the same number of
mitochondria as a "couch potato" C.
produce large quantities of lactate and H
D. all of the above
___
39
Metabolites of glycolysis and the Krebs cycle can
be converted to _____. A. amino acids
B. glycerol C. fatty acids
D. all of the above
___
40
Catabolism _____. A. breaks down
molecules B. tends to be exergonic
C. drives anabolism D. all of the
above
___