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Very few Gram-positive bacteria utilize the Entner-Doudoroff glycolytic pathway.

A) True
B) False

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The pentose phosphate pathway produces


A) CO2.
B) NADPH.
C) glyceraldehyde 3-phosphate.
D) All of the choices are correct.

E) A) and B)
F) All of the above

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The TCA cycle is located in the ______________ of bacteria,and in the _____________ of eukaryotes.


A) cytoplasm; mitochondrial matrix
B) plasma membrane; inner mitochondrial membrane
C) plasma membrane; mitochondrial matrix
D) cytoplasm; inner mitochondrial membrane

E) None of the above
F) A) and D)

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How many molecules of ATP are needed to reduce one molecule of carbon dioxide to carbohydrate by oxygenic phototrophs during the dark reactions of photosynthesis?


A) 2
B) 3
C) 4
D) 10-12

E) A) and D)
F) A) and C)

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In the TCA cycle,two carbons in the form of __________ are added to oxaloacetate at the start of the cycle.


A) acetyl-CoA
B) ethanol
C) carbon dioxide
D) methanol

E) A) and B)
F) A) and C)

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All eukaryotic photosynthesizers are oxygenic.

A) True
B) False

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Which nutritional classification would you predict to fit most of the well-known members of the human microbiome?


A) Photolithoautotrophs
B) Chemoorganoheterotrophs
C) Chemolithoautotrophs
D) Chemolithohetertrophs

E) C) and D)
F) A) and D)

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An organism may use glycolysis and the pentose phosphate pathway simultaneously.

A) True
B) False

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Glycolysis and the TCA cycle are two of the most important catabolic pathways in chemoorganotrophs.

A) True
B) False

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Aerobic respiration,anaerobic respiration,and fermentation are the three basic types of


A) chemoorganoheterotrophic metabolism.
B) photolithoautotrophic metabolism.
C) chemolithoautotrophic metabolism.
D) chemoorganoautotrophic metabolism.

E) B) and C)
F) A) and D)

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In the process of __________,ATP is synthesized when excited electrons from chlorophyll P700 pass through a series of electron carriers then return to chlorophyll P700.


A) photosynthesis
B) cyclic photophosphorylation
C) acyclic photophosphorylation
D) noncyclic photophosphorylation

E) A) and B)
F) A) and C)

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In the process of noncyclic photophosphorylation


A) water is split to form oxygen gas.
B) electrons from water flow through electron transport chains resulting in synthesis of ATP and NADPH.
C) photosystems I and II are both required.
D) All of the choices are correct.

E) A) and D)
F) B) and D)

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Some aerobic bacteria lack the Entner-Doudoroff and Embden-Meyerhoff pathways and instead use the pentose phosphate pathway for glycolysis.

A) True
B) False

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____________ is an aerobic chemolithotrophic process that ultimately oxidizes ammonia to nitrate,whereas __________ is a form of anaerobic respiration involving the oxidation of an organic compound using an oxidized nitrogenous compound,such as nitrate,as the terminal electron acceptor.


A) Ammonification; nitrification
B) Denitrification; nitrification
C) Ammonification; denitrification
D) Nitrification; denitrification

E) A) and B)
F) A) and C)

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The major difference between aerobic and anaerobic respiration is the final electron acceptor at the end of the electron transport chain.

A) True
B) False

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The major function(s) of the TCA cycle is(are)


A) energy production.
B) provision of carbon skeletons for biosynthesis of cell components.
C) electron transport.
D) energy production and provision of carbon skeletons for biosynthesis of cell components.

E) All of the above
F) B) and C)

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Oxygen is always required for the regeneration of NAD from NADH.

A) True
B) False

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The net gain of ATP per molecule of glucose metabolized to pyruvate using Entner-Doudoroff pathway is


A) 4.
B) 2.
C) 1.
D) 0.

E) C) and D)
F) All of the above

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_______________ is a two-step process that depends on the activity of at least two genera to carry out the oxidation of ammonia to nitrate.

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Which of the following is produced in largest numbers by the TCA cycle?


A) ATP (GTP)
B) NADH
C) FADH
D) CO2

E) B) and D)
F) B) and C)

Correct Answer

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