Transcript Which of the following is a coenzyme associated with

Which of the following is a coenzyme
associated with cellular respiration?
A. NAD+
B. O2
C. FAD
___
D. both A and C
Since glucose is a high-energy molecule and
its metabolites, CO2 and H2O are low-energy
molecules, the breakdown of
glucose would be described as an _____
reaction.
A.
___
exergonic
B. endergonic
NAD+ is _____ when it accepts two electrons
and a hydrogen ion (H+).
___
A.
reduced
B. oxidized
About _____ of the energy in glucose is
transformed into ATP.
A. 5%
___
B. 40%
C. 75%
D. 100%
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
Which of the following is not a product of the
complete breakdown of glucose?
A.
___
O2
B. CO2
C. ATP
D. H2O
The first phase of glucose metabolism is
_____.
A. the Krebs cycle
___
B. glycolysis
C. the electron transport system
D. the transition reaction
The coenzymes NAD and FAD carry
electrons to the _____.
A. nucleus
B. Krebs cycle
C. plasma membrane
___
D. electron transport system
Since it is universally found in organisms,
researchers believe_____ evolved first.
A. the electron transport system
B. Krebs cycle
C. glycolysis
___
The inputs of glycolysis include _____.
A. glucose
B. NAD+
C. ATP
D. all of the above
___
When a phosphate is transferred from a highenergy molecule of ADP to form ATP it's
referred to as _____.
A. photophosphorylation
___
B. substrate-level phosphorylation
C. oxidative phosphorylation
Glycolysis occurs in the _____.
___
A.
cytosol
B. matrix
C. cristae
D. nucleus
There is/are _____ pyruvate molecule(s)
produced per glucose molecule during
glycolysis.
A. one
___
B. two
C. six
D. ten
If oxygen is not available _____ follows
glycolysis.
A.
___
fermentation
B. the transition reaction
C. the Krebs cycle
D. the electron transport system
When oxygen is available, pyruvate enters the
_____.
A. nucleus
B. chloroplast
C. plasma membrane
___
D. mitochondria
Each of the two pyruvates produced during
glycolysis has _____ carbons.
A.
___
3
B. 6
C. 12
D. 36
Which of the following is NOT a product (an
output) of glycolysis?
A. NADH
B. pyruvate
C. CO2
___
D. ATP
The "after taxes" (net gain) number of ATP
produced during glycolysis is _____.
A. 1
___
B. 2
C. 4
D. 32
The ATP produced during glycolysis are
produced by _____.
___
A.
substrate-level phosphorylation
B. oxidative phosphorylation
C. photophosphorylation
The enzymes of the transition reaction and
Krebs cycle are located in the _____.
A. cytosol
___
B. matrix
C. cristae
D. thylakoids
The __________ connects glycolysis to the
Krebs cycle.
A. electron transport system
___
B. transition reaction
C. cristae
D. mitochondrial intermembrane
When electrons are removed from pyruvate in
the transition reaction, they are accepted by
_____.
A. acetyl Co-A
B. FAD
C. NAD+
___
D. ATP
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
The first metabolite of the Krebs cycle is
__________.
A. lactate
B. pyruvate
C. oxaloacetate
___
D. citrate
Which of the following is an output of the
Krebs cycle?
A. CO2
B. ATP
C. FADH2
___
D. all of the above
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
The electrons that enter the electron transport
system are carried there by _____.
A. NADH
B. FADH2
C. both A and B
___
The energy released by the electron transport
system produces ATP by _____.
A. photophosphorylation
B. substrate-level phosphorylation
C. oxidative phosphorylation
___
The electron transport system is located in the
_____.
A. stroma
B. matrix
C. cytosol
___
D. cristae
When O2 is reduced during the electron
transport system, _____ is produced.
A.
___
H2O
B. CO2
C. ADP
D. glucose
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
The final electron acceptor in the electron
transport system is _____.
A. FADH2
___
B. O2
C. coenzyme Q
D. cytochrome b
How many ATP molecules are produced when
FADH2 delivers electrons to the electron
transport system?
A. 1
___
B. 2
C. 4
D. 36
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
Animal cells perform _____ fermentation.
A.
___
lactate (lactic acid)
B. alcoholic
C. both A and B
The product of alcoholic fermentation that
allows us to make bread is _____.
A. O2
___
B. CO2
C. H2O
D. lactate
During fermentation, _____ is regenerated
and it returns to glycolysis to pick up more
electrons.
A. ATP
B. glucose
C. NAD+
___
D. pyruvate
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
Metabolites of glycolysis and the Krebs cycle
can be converted to _____.
A. amino acids
B. glycerol
C. fatty acids
___
D. all of the above
Catabolism _____.
A. breaks down molecules
B. tends to be exergonic
C. drives anabolism
D. all of the above
___