Question 1

In glycolysis,the net number of NADH produced is

Accepted Answer

A)  0. 
B)  3. 
C)  2. 
D)  4. 
E)  30. 
A)  0. 
B)  3. 
C)  2. 
D)  4. 
E)  30.

Question 2

Which of the following toxins would interfere with the electron transport chain by preventing the formation of a proton gradient?

Accepted Answer

A)  mercury 
B)  arsenic 
C)  cyanide 
D)  DNP 
E)  carbon monoxide 
A)  mercury 
B)  arsenic 
C)  cyanide 
D)  DNP 
E)  carbon monoxide

Question 3

If glucose is unavailable,aerobic respiration may occur with

Accepted Answer

A)  proteins. 
B)  carbohydrates. 
C)  fats. 
D)  glycogen. 
E)  All of the answer choices are correct. 
A)  proteins. 
B)  carbohydrates. 
C)  fats. 
D)  glycogen. 
E)  All of the answer choices are correct.

Question 4

If asked to point on a diagram of a cell to the place where glycolysis occurs,you would point to the

Accepted Answer

A)  cytosol. 
B)  mitochondrion. 
C)  lysosome. 
D)  nucleus. 
E)  cell membrane. 
A)  cytosol. 
B)  mitochondrion. 
C)  lysosome. 
D)  nucleus. 
E)  cell membrane.

Question 5

During glycolysis and the Krebs cycle,NAD⁺ picks up two electrons and a proton to form NADH.The NADH molecule is the ________ form of NAD+.

Accepted Answer

A)  oxidized 
B)  phosphorylated 
C)  reduced 
D)  hydrolyzed 
E)  lysed 
A)  oxidized 
B)  phosphorylated 
C)  reduced 
D)  hydrolyzed 
E)  lysed

Question 6

The chemical formula for glucose is

Accepted Answer

A)  C₆H₁₂O₆. 
B)  C₁₂H₆O₁₂. 
C)  C₆H₆O₁₂. 
D)  C₁₂H₁₂O₆. 
E)  C₁H₂O₁. 
A)  C₆H₁₂O₆. 
B)  C₁₂H₆O₁₂. 
C)  C₆H₆O₁₂. 
D)  C₁₂H₁₂O₆. 
E)  C₁H₂O₁.

Question 7

In glycolysis and the Krebs cycle,electrons are removed from glucose and taken up by molecules like NAD⁺.In such a reaction,glucose is being ________ and NAD⁺ is being ________.

Accepted Answer

A)  reduced, oxidized 
B)  oxidized, reduced 
C)  phosphorylated, oxidized 
D)  phosphorylated, reduced 
E)  reduced, phosphorylated 
A)  reduced, oxidized 
B)  oxidized, reduced 
C)  phosphorylated, oxidized 
D)  phosphorylated, reduced 
E)  reduced, phosphorylated

Question 8

In the Investing Life,Hot Plants Offer Heat Rewards,scientists were working with heat production by flowers.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 to increase the rate of pollen production? 
E)  Does heat increase the rate of photosynthesis by Philodendron? 
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 to increase the rate of pollen production? 
E)  Does heat increase the rate of photosynthesis by Philodendron?

Question 9

All diet pills are approved by the U.S.Food and Drug Administration (FDA).

Accepted Answer

A) True 
 B)False

Question 10

Many toxins are known to kill organisms by interfering with cellular respiration.Which poison blocks the Krebs cycle by inhibiting the formation of acetyl-coA?

Accepted Answer

A)  arsenic. 
B)  carbon monoxide. 
C)  cyanide. 
D)  mercury compounds. 
E)  DNP. 
A)  arsenic. 
B)  carbon monoxide. 
C)  cyanide. 
D)  mercury compounds. 
E)  DNP.

Question 11

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 consumers. 
E)  able to conduct photosynthesis, not cellular respiration. 
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 consumers. 
E)  able to conduct photosynthesis, not cellular respiration.

Question 12

The theoretical net ATP yield from a molecule of glucose is ________ ATP molecules.

Accepted Answer

A)  2 
B)  36 
C)  4 
D)  15 
E)  42 
A)  2 
B)  36 
C)  4 
D)  15 
E)  42

Question 13

In eukaryotic cells,the Krebs cycle occurs in the

Accepted Answer

A)  lysosome. 
B)  nucleus. 
C)  cytoplasm. 
D)  mitochondrion. 
E)  ribosome. 
A)  lysosome. 
B)  nucleus. 
C)  cytoplasm. 
D)  mitochondrion. 
E)  ribosome.

Question 14

Which energy pathway can be performed by all living organisms?

Accepted Answer

A)  aerobic respiration 
B)  carbon reactions 
C)  photosynthesis 
D)  Krebs cycle 
E)  glycolysis 
A)  aerobic respiration 
B)  carbon reactions 
C)  photosynthesis 
D)  Krebs cycle 
E)  glycolysis

Question 15

The Krebs cycle can be used to manufacture amino acids.

Accepted Answer

A) True 
 B)False

Question 16

Energy cannot be extracted from lipids by cellular respiration.

Accepted Answer

A) True 
 B)False

Question 17

At the end of cellular respiration,the electrons are transferred to a final electron acceptor.  In aerobic cellular respiration,this molecule is

Accepted Answer

A)  oxygen. 
B)  nitrogen. 
C)  hydrogen. 
D)  sulfur. 
E)  carbon dioxide. 
A)  oxygen. 
B)  nitrogen. 
C)  hydrogen. 
D)  sulfur. 
E)  carbon dioxide.

Question 18

Glycolysis and the Krebs cycle do not capture all of the potential 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)  All answers are correct. 
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)  All answers are correct.

Question 19

In the electron transport chain,which structure forms a channel in the inner membrane of the mitochondria and adds phosphate to ADP?

Accepted Answer

A)  ATP synthase 
B)  NADH synthase 
C)  FADH₂ synthase 
D)  ADP synthase 
E)  NADPH synthase 
A)  ATP synthase 
B)  NADH synthase 
C)  FADH₂ synthase 
D)  ADP synthase 
E)  NADPH synthase

Question 20

In aerobic respiration,nitrogen gas can be used as the final electron acceptor.

Accepted Answer

A) True 
 B)False

Exam 6: Respiration and Fermentation

In glycolysis,the net number of NADH produced is

Which of the following toxins would interfere with the electron transport chain by preventing the formation of a proton gradient?

If glucose is unavailable,aerobic respiration may occur with

If asked to point on a diagram of a cell to the place where glycolysis occurs,you would point to the

During glycolysis and the Krebs cycle,NAD⁺ picks up two electrons and a proton to form NADH.The NADH molecule is the ________ form of NAD+.

The chemical formula for glucose is

In glycolysis and the Krebs cycle,electrons are removed from glucose and taken up by molecules like NAD⁺.In such a reaction,glucose is being ________ and NAD⁺ is being ________.

In the Investing Life,Hot Plants Offer Heat Rewards,scientists were working with heat production by flowers.What hypothesis were the scientists testing?

All diet pills are approved by the U.S.Food and Drug Administration (FDA).

Many toxins are known to kill organisms by interfering with cellular respiration.Which poison blocks the Krebs cycle by inhibiting the formation of acetyl-coA?

Plants are

The theoretical net ATP yield from a molecule of glucose is ________ ATP molecules.

In eukaryotic cells,the Krebs cycle occurs in the

Which energy pathway can be performed by all living organisms?

The Krebs cycle can be used to manufacture amino acids.

Energy cannot be extracted from lipids by cellular respiration.

At the end of cellular respiration,the electrons are transferred to a final electron acceptor. In aerobic cellular respiration,this molecule is

Glycolysis and the Krebs cycle do not capture all of the potential energy in a glucose molecule because

In the electron transport chain,which structure forms a channel in the inner membrane of the mitochondria and adds phosphate to ADP?

In aerobic respiration,nitrogen gas can be used as the final electron acceptor.

The Scientific Study of Life

The Chemistry of Life

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The Energy of Life

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DNA Structure and Gene Function

DNA Replication,Binary Fission,and Mitosis

Sexual Reproduction and Meiosis

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Evidence of Evolution

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Evolution and Diversity of Plants

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Communities and Ecosystems

Preserving Biodiversity

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Reproduction and Development of Flowering Plants

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The Nervous System and the Senses

The Endocrine System

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Animal Reproduction and Development

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In glycolysis and the Krebs cycle,electrons are removed from glucose and taken up by molecules like NAD⁺.In such a reaction,glucose is being and NAD⁺ is being .