Question 1

The net ATP production in glycolysis is only two because:

Accepted Answer

A)  Two molecules of ATP are needed to "activate" glucose
B)  Two molecules of ATP are used to move NADH into the mitochondria
C)  That is all the ATP produced during glycolysis
D)  ATP production cannot exceed NADH production
E)  Glycolysis may occur without oxygen being presentF) A) and B)
G) B) and D)

Question 2

An example of a poison that kills by interfering with ATP production is:

Accepted Answer

A)  Arsenic
B)  Carbon monoxide
C)  All are correct
D)  Cyanide
E)  RotenoneF) B) and E)
G) A) and C)

Question 3

Only a small amount of ATP is produced during glycolysis because most of the energy stored in a glucose molecule remains in the bonds of:

Accepted Answer

A)  Carbon dioxide
B)  NADH
C)  PGAL
D)  Pyruvate
E)  None of these are correctF) B) and D)
G) C) and D)

Question 4

Muscle cells use lactic acid fermentation to:

Accepted Answer

A)  Generate NAD+ so that glycolysis can continue in the absence of oxygen
B)  Produce ATP in the presence of oxygen
C)  Produce more ATP than in respiration
D)  Allow an animal to survive for long periods of time in the absence of oxygen
E)  Produce less CO2F) C) and D)
G) A) and E)

Question 5

Anaerobic respiration uses an inorganic molecule other than O2 as the electron acceptor at the end of the electron transport chain.

Accepted Answer

A) True 
 B)False

Question 6

The sole source of ATP production in cells using fermentation only is:

Accepted Answer

A)  Glycolysis
B)  Kreb's cycle
C)  Photosynthesis
D)  Electron transport
E)  The Calvin cycleF) B) and E)
G) A) and D)

Question 7

NADH is the only electron carrier produced during aerobic respiration.

Accepted Answer

A) True 
 B)False

Question 8

Substrate phosphorylation occurs when protons pass through ATP synthase and combine with oxygen to make water.

Accepted Answer

A) True 
 B)False

Question 9

Substrate phosphorylation occurs when a high energy "donor" molecule physically transfers a phosphate group to ADP.

Accepted Answer

A) True 
 B)False

Question 10

Glycolysis does not require:

Accepted Answer

A)  ATP
B)  Glucose
C)  Enzymes
D)  NAD
E)  OxygenF) A) and C)
G) A) and B)

Question 11

The most ancient of the energy pathways is probably:

Accepted Answer

A)  Aerobic respiration
B)  Calvin cycle
C)  Photosynthesis
D)  Kreb's cycle
E)  GlycolysisF) A) and D)
G) A) and C)

Question 12

In prokaryotic cells the electron transport system occurs in the mitochondria.

Accepted Answer

A) True 
 B)False

Question 13

The Kreb's cycle produces __________ and ____________.

Accepted Answer

A)  Carbon dioxide, oxygen
B)  Oxygen, ATP
C)  ATP, electron carriers
D)  Electron carriers, oxygen
E)  Pyruvate, PGALF) A) and D)
G) B) and C)

Question 14

The smallest molecule in the Krebs cycle contains ____ carbon atoms.

Accepted Answer

A)  4
B)  1
C)  3
D)  5
E)  6F) A) and C)
G) B) and D)

Question 15

In eukaryotic cells NADH and FADH2 are transported along electron carriers of the:

Accepted Answer

A)  Inner mitochondrial membrane
B)  Matrix
C)  Outer mitochondrial membrane
D)  Cell membrane
E)  CytoplasmF) All of the above
G) A) and E)

Question 16

Glycolysis and the Kreb's cycle do not capture all of the energy in a glucose molecule because:

Accepted Answer

A)  ATP easily vaporizes
B)  Energy cannot be created or destroyed
C)  Some glucose is not broken down
D)  Some energy is always lost as heat during chemical reactions
E)  Some energy remains in the atomsF) A) and E)
G) B) and E)

Question 17

Philodendron flowers have to use a lot of energy to attract beetles as pollinators.This is similar to the energy used to produce ____ by many other flowering plants to attract pollinators.

Accepted Answer

A)  Pollen
B)  Seeds
C)  Spores
D)  Nectar
E)  LeavesF) All of the above
G) A) and B)

Question 18

Plants are:

Accepted Answer

A)  Net O2 consumers and CO2 producers
B)  Net O2 producers and CO2 consumers
C)  Net O2 and CO2 producers
D)  Net O2 and CO2 consumersE) A) and C)
F) A) and D)

Question 19

The electron transport chain extracts most of the potential energy in NADH by removing the energy from its electrons in a single step.

Accepted Answer

A) True 
 B)False

Question 20

The approximate maximum net ATP yield from a molecule of glucose is about __ ATP molecules.

Accepted Answer

A)  2
B)  30
C)  4
D)  15
E)  42F) A) and E)
G) C) and E)

Exam 6: How Cells Release Energy

Plants are:

Correct AnswerverifiedShow Answer

The electron transport chain extracts most of the potential energy in NADH by removing the energy from its electrons in a single step.

Correct AnswerverifiedShow Answer

Only a small amount of ATP is produced during glycolysis because most of the energy stored in a glucose molecule remains in the bonds of:

Correct AnswerverifiedShow Answer

Glycolysis and the Kreb's cycle do not capture all of the energy in a glucose molecule because:

Correct AnswerverifiedShow Answer

The most ancient of the energy pathways is probably:

Correct AnswerverifiedShow Answer

The approximate maximum net ATP yield from a molecule of glucose is about __ ATP molecules.

Correct AnswerverifiedShow Answer

Substrate phosphorylation occurs when protons pass through ATP synthase and combine with oxygen to make water.

Correct AnswerverifiedShow Answer

In prokaryotic cells the electron transport system occurs in the mitochondria.

Correct AnswerverifiedShow Answer

Substrate phosphorylation occurs when a high energy "donor" molecule physically transfers a phosphate group to ADP.

Correct AnswerverifiedShow Answer

The net ATP production in glycolysis is only two because:

Correct AnswerverifiedShow Answer

Anaerobic respiration uses an inorganic molecule other than O2 as the electron acceptor at the end of the electron transport chain.

Correct AnswerverifiedShow Answer

Muscle cells use lactic acid fermentation to:

Correct AnswerverifiedShow Answer

The smallest molecule in the Krebs cycle contains ____ carbon atoms.

Correct AnswerverifiedShow Answer

NADH is the only electron carrier produced during aerobic respiration.

Correct AnswerverifiedShow Answer

In eukaryotic cells NADH and FADH2 are transported along electron carriers of the:

Correct AnswerverifiedShow Answer

The Kreb's cycle produces __________ and ____________.

Correct AnswerverifiedShow Answer

Glycolysis does not require:

Correct AnswerverifiedShow Answer

Philodendron flowers have to use a lot of energy to attract beetles as pollinators.This is similar to the energy used to produce ____ by many other flowering plants to attract pollinators.

Correct AnswerverifiedShow Answer

An example of a poison that kills by interfering with ATP production is:

Correct AnswerverifiedShow Answer

The sole source of ATP production in cells using fermentation only is:

Correct AnswerverifiedShow Answer

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Anaerobic respiration uses an inorganic molecule other than O₂ as the electron acceptor at the end of the electron transport chain.

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In eukaryotic cells NADH and FADH₂ are transported along electron carriers of the:

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The Kreb's cycle produces and __.

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