Question 1

In glycolysis the net number of NADH produced is:

Accepted Answer

A)  0
B)  3
C)  2
D)  4
E)  30F) B) and E)
G) A) and B)

Question 2

If you measure the air a person inhales you observe that the concentrations ______ in the air they exhale.

Accepted Answer

A)  of O2 rises and CO2 falls
B)  of O2 falls and CO2 rises
C)  of both O2 and CO2 rise
D)  of both O2 and CO2 fallE) A) and D)
F) B) and C)

Question 3

The "spent" electrons from electron transport in aerobic respiration are transferred to:

Accepted Answer

A)  Oxygen
B)  Nitrogen
C)  Hydrogen
D)  Sulfur
E)  Carbon dioxideF) C) and D)
G) D) and E)

Question 4

The products of cellular respiration are:

Accepted Answer

A)  Carbon dioxide, glucose, and water
B)  Glucose, water, and ATP
C)  Glucose, carbon dioxide, and ATP
D)  Oxygen, ATP, and water
E)  Carbon dioxide, water, and ATPF) All of the above
G) B) and E)

Question 5

figure 6.14 
-What is the dependent variable in figure 6.14?

Accepted Answer

A)  Temperature
B)  Rate of oxygen production
C)  Amount of pollen collected
D)  Rate of carbon dioxide production
E)  Glucose productionF) None of the above
G) A) and B)

Question 6

What first happens to the carbon atoms that enter the Krebs cycle as acetyl CoA?

Accepted Answer

A)  They are reduced to form carbon dioxide
B)  They combine with a 4-carbon sugar to form a 6-carbon sugar
C)  Two acetyl CoA molecules join together to form a 6-carbon sugar
D)  They combine with pyruvate to form a 4-carbon sugar
E)  They are activated with a phosphate from ATPF) B) and D)
G) C) and E)

Question 7

The reactants for cellular respiration are:

Accepted Answer

A)  Glucose and ATP
B)  Water and ATP
C)  Oxygen and ATP
D)  Glucose and oxygen
E)  Carbon dioxide and glucoseF) C) and E)
G) A) and C)

Question 8

The electron transport chain produces a/an _____________ gradient.

Accepted Answer

A)  Electron
B)  ATP
C)  NADH
D)  Oxygen
E)  ProtonF) A) and D)
G) B) and C)

Question 9

A cell produces approximately 30 ATP per glucose,however,if you calculated the total energy in a glucose molecule,90 ATP should be generated.What is the best explanation for this difference?

Accepted Answer

A)  Some of the energy is destroyed
B)  Scientists have not figured out where the rest of the energy goes
C)  ATP has more energy than originally thought
D)  Some of the energy is used to do work in the cell
E)  Some energy is lost as heatF) A) and E)
G) C) and E)

Question 10

The compound that enters the Kreb's cycle is:

Accepted Answer

A)  ATP
B)  Pyruvate
C)  PGAL
D)  ATP Synthase
E)  Acetyl CoAF) None of the above
G) A) and B)

Question 11

The three main biochemical pathways of cellular respiration are:

Accepted Answer

A)  Glycolysis, light reactions, and Calvin cycle
B)  Calvin cycle, Kreb's cycle, and light reactions
C)  Kreb's cycle, Calvin cycle, and electron transport
D)  Glycolysis, Kreb's cycle, and electron transport
E)  Light reactions, carbon reactions, and electron transportF) A) and B)
G) A) and C)

Question 12

Animals are:

Accepted Answer

A)  Net O2 producers and CO2 consumers
B)  Net O2 and CO2 producers
C)  Net O2 consumers and CO2 producers
D)  Net O2 and CO2 consumersE) A) and D)
F) All of the above

Question 13

In prokaryotic cells,cellular respiration occurs in the:

Accepted Answer

A)  Mitochondria
B)  Cytoplasm and the cell's outer membrane
C)  Cell's outer membrane
D)  Mitochondria and cytoplasm
E)  CytoplasmF) A) and E)
G) B) and E)

Question 14

Glycolysis of a glucose molecule:

Accepted Answer

A)  Produces a net gain of two molecules of ATP
B)  Occurs only in animal cells
C)  Transfers electrons from glucose to FAD
D)  Occurs only in microorganisms
E)  Occurs in mitochondriaF) A) and C)
G) A) and B)

Question 15

During fermentation yeast produce ethanol,a toxic waste product.Why would yeast produce something that is toxic to themselves?

Accepted Answer

A)  To produce NADH for energy
B)  To regenerate NAD+ in order to continue glycolysis
C)  To use up excess pyruvate in order to continue glycolysis
D)  To conserve oxygen for other reactions
E)  To avoid the production of lactic acidF) B) and E)
G) B) and C)

Question 16

Cells from a Philodendron flower have which of the following?

Accepted Answer

A)  All are correct
B)  Mitochondria
C)  Chloroplasts
D)  A nucleus
E)  A cell wallF) B) and D)
G) A) and D)

Question 17

figure 6.14 
-What is the independent variable in figure 6.14?

Accepted Answer

A)  Temperature
B)  Rate of carbon dioxide production
C)  Rate of oxygen production
D)  Amount of pollen collected
E)  Glucose productionF) A) and C)
G) B) and D)

Question 18

What hypothesis were the scientists testing?

Accepted Answer

A)  Does generating heat increase the metabolism of Philodendron?
B)  Does generating heat decrease the metabolism of Philodendron?
C)  Is heat being used by Philodendron to attract pollinators?
D)  Is heat being used by Philodendron increase the rate of pollen production?
E)  Does heat increase the rate of photosynthesis by Philodendron?F) B) and C)
G) C) and E)

Question 19

The molecule in the Krebs cycle that acetyl CoA combines with is:

Accepted Answer

A)  Pyruvate
B)  Oxygen
C)  Oxaloacetate
D)  NADH
E)  A cytochromeF) A) and B)
G) C) and D)

Question 20

The main reason that cellular respiration needs to occur step by step is because:

Accepted Answer

A)  Cells don't store enough oxygen
B)  Cells don't have many mitochondria
C)  Glucose breaks down slowly inside a cell
D)  Too much energy would be released for the cell to harness
E)  Cells produce the enzymes needed for cellular respiration very slowlyF) C) and D)
G) A) and B)

Exam 6: How Cells Release Energy

The products of cellular respiration are:

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The compound that enters the Kreb's cycle is:

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What hypothesis were the scientists testing?

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The molecule in the Krebs cycle that acetyl CoA combines with is:

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The "spent" electrons from electron transport in aerobic respiration are transferred to:

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Glycolysis of a glucose molecule:

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The reactants for cellular respiration are:

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The electron transport chain produces a/an _____________ gradient.

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In glycolysis the net number of NADH produced is:

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figure 6.14 -What is the dependent variable in figure 6.14?

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If you measure the air a person inhales you observe that the concentrations ______ in the air they exhale.

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A cell produces approximately 30 ATP per glucose,however,if you calculated the total energy in a glucose molecule,90 ATP should be generated.What is the best explanation for this difference?

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figure 6.14 -What is the independent variable in figure 6.14?

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The main reason that cellular respiration needs to occur step by step is because:

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During fermentation yeast produce ethanol,a toxic waste product.Why would yeast produce something that is toxic to themselves?

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Animals are:

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Cells from a Philodendron flower have which of the following?

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In prokaryotic cells,cellular respiration occurs in the:

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What first happens to the carbon atoms that enter the Krebs cycle as acetyl CoA?

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The three main biochemical pathways of cellular respiration are:

Correct AnswerverifiedShow Answer

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