Question 1

Fermentation is a process that proceeds without oxygen. Such a process can be described as
.

Accepted Answer

The answer of Fermentation is a process that proceeds without...

Question 2

The statement, "The total amount of energy in the universe is constant," is a tenet of

Accepted Answer

A)  entropy.
B)  enthalpy.
C)  thermodynamic spontaneity.
D)  the first law of thermodynamics.
E)  the second law of thermodynamics.

Question 3

Bioenergetics can be simply defined as

Accepted Answer

A)  applied thermodynamics.
B)  holding constant the variables in the universe.
C)  the units in which energy is expressed.
D)  the application of biological principles to physics.
E)  a subdivision of biology. A

Question 4

In a reversible chemical reaction at equilibrium, the concentration of X (the reactant) is 0.75 moles/liter, and the concentration of Y (the product) is 2.25 moles/liter. At 25° C, what would be the Keq?

Accepted Answer

A)  37.5
B)  1.69
C)  3.0
D)  1.50
E)  0.33

Question 5

When OG' = 0 in a chemical reaction, under the conditions

Accepted Answer

A)  reactants and products are at equilibrium.
B)  the reaction is spontaneous to the left.
C)  work can be done; energy is required.
D)  no work can be done; no energy is required.
E)  both A and D

Question 6

Matter and energy flow through the biosphere. The flow of matter, however, differs from the flow of energy. Which of the following statements accurately describes these differences?

Accepted Answer

A)  Matter does not accompany energy as it enters the biosphere, but it does flow with energy from the biosphere.
B)  Matter flows in cycles, whereas energy flows in one direction.
C)  Energy flows as organic molecules are reduced to inorganic molecules, but matter does not.
D)  Energy flows from chemotrophs to phototrophs, whereas matter flows from phototrophs to chemotrophs.
E)  Matter and energy flow sometimes in cycles, sometimes unidirectionally.

Question 7

Which process involves an increase in entropy of the system?

Accepted Answer

A)  combustion of paper
B)  formation of raindrops
C)  freezing of ice
D)  synthesis of cellulose
E)  any spontaneous process A

Question 8

Which is NOT true of phototrophs?

Accepted Answer

A)  They store energy as glucose.
B)  They can be bacteria.
C)  They capture light energy.
D)  They provide energy for chemotrophs.
E)  They never function as autotrophs.

Question 9

Nerve impulses travel along the neurons by the opening of channels that allow sodium ions to flow inward followed by an outward flow of potassium ions. In order to ensure that the impulse may be produced at any time, sodium is actively transported out of the cell, and potassium is transported into the cell by the sodium/potassium pump. Which of the following types of work is performed by the sodium/potassium pump?

Accepted Answer

A)  synthetic
B)  bioluminescence
C)  electrical
D)  mechanical
E)  concentration

Question 10

Muscle contraction is an example of which of the following types of work?

Accepted Answer

A)  bioluminescence
B)  heat
C)  electrical
D)  mechanical
E)  concentration

Question 11

Fireflies have the ability to convert the energy in ATP to light. Which of the following types of work is performed by the firefly?

Accepted Answer

A)  mechanical
B)  electrical
C)  heat
D)  concentration
E)  bioluminescence

Question 12

Which of the following statements is NOT true of the value OH?

Accepted Answer

A)  OH = OE + O(PV) 
B)  OH is change in heat content.
C)  OH is change in enthalpy.
D)  A reaction with a positive OH value is exothermic.
E)  In biology, OH is basically the same as OE.

Question 13

Animals that regulate their body temperature independent of the environment are called

Accepted Answer

A)  abiotherms.
B)  homeotherms.
C)  biotherms.
D)  heterotherms.
E)  poikilotherms. B

Question 14

A student drops his notes, and his papers scatter. The fact that the papers scatter and do not remain neatly stacked is an illustration of

Accepted Answer

A)  the first law of thermodynamics.
B)  an increase in entropy.
C)  the second law of thermodynamics.
D)  both A and B
E)  both B and C

Question 15

In a cell, the concentration of glucose- 6- phosphate is 83 µM and fructose- 6- phosphate is 14 µM. The OG°' = 410 cal/mol for the conversion of glucose- 6- phosphate to fructose- 6- phosphate. Based upon this information, the OG' for this reaction (in cal/mol) is

Accepted Answer

A)  644.
B)  0.
C)  27.
D)  - 644.
E)  - 63.7.

Question 16

Any process that results in an increase in the free energy of the system is called .

Accepted Answer

The answer of Any process that results in an increase...

Question 17

A spontaneous reaction

Accepted Answer

A)  has an overall positive free energy change.
B)  could occur, but might take a very long time.
C)  has to occur immediately.
D)  will never occur.
E)  is associated exclusively with homeothermic organisms.

Question 18

Which of the following is not a basic need of the cell?

Accepted Answer

A)  100% efficiency
B)  chemical catalysts
C)  information
D)  molecular building blocks
E)  energy

Question 19

A _ is an organism that requires the intake of chemical compounds such as carbohydrates, fats, and proteins.

Accepted Answer

The answer of A _ is an organism that requires...

Question 20

When the OG°' of a chemical reaction is positive (K'eq < 1.0) under standard conditions,

Accepted Answer

A)  work can be done under these conditions.
B)  reactants and products are at equilibrium.
C)  the reaction is exothermic.
D)  reactants predominate over products.
E)  the reaction is spontaneous to the right.

Exam 5: Bioenergetics: The Flow of Energy in the Cell

Fermentation is a process that proceeds without oxygen. Such a process can be described as .

Correct Answer
verified

The statement, "The total amount of energy in the universe is constant," is a tenet of

Correct Answer
verified

Bioenergetics can be simply defined as

Correct Answer
verified
A

In a reversible chemical reaction at equilibrium, the concentration of X (the reactant) is 0.75 moles/liter, and the concentration of Y (the product) is 2.25 moles/liter. At 25° C, what would be the Keq?

Correct Answer
verified

When OG' = 0 in a chemical reaction, under the conditions

Correct Answer
verified

Matter and energy flow through the biosphere. The flow of matter, however, differs from the flow of energy. Which of the following statements accurately describes these differences?

Correct Answer
verified

Which process involves an increase in entropy of the system?

Correct Answer
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A

Which is NOT true of phototrophs?

Correct Answer
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Correct Answer
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Muscle contraction is an example of which of the following types of work?

Correct Answer
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Fireflies have the ability to convert the energy in ATP to light. Which of the following types of work is performed by the firefly?

Correct Answer
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Which of the following statements is NOT true of the value OH?

Correct Answer
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Animals that regulate their body temperature independent of the environment are called

Correct Answer
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B

A student drops his notes, and his papers scatter. The fact that the papers scatter and do not remain neatly stacked is an illustration of

Correct Answer
verified

In a cell, the concentration of glucose- 6- phosphate is 83 µM and fructose- 6- phosphate is 14 µM. The OG°' = 410 cal/mol for the conversion of glucose- 6- phosphate to fructose- 6- phosphate. Based upon this information, the OG' for this reaction (in cal/mol) is

Correct Answer
verified

Any process that results in an increase in the free energy of the system is called .

Correct Answer
verified

A spontaneous reaction

Correct Answer
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Which of the following is not a basic need of the cell?

Correct Answer
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A _ is an organism that requires the intake of chemical compounds such as carbohydrates, fats, and proteins.

Correct Answer
verified

When the OG°' of a chemical reaction is positive (K'eq < 1.0) under standard conditions,

Correct Answer
verified

Exam 5: Bioenergetics: The Flow of Energy in the Cell

Fermentation is a process that proceeds without oxygen. Such a process can be described as .

Correct AnswerverifiedShow Answer

The statement, "The total amount of energy in the universe is constant," is a tenet of

Correct AnswerverifiedShow Answer

Bioenergetics can be simply defined as

Correct AnswerverifiedA

In a reversible chemical reaction at equilibrium, the concentration of X (the reactant) is 0.75 moles/liter, and the concentration of Y (the product) is 2.25 moles/liter. At 25° C, what would be the Keq?

Correct AnswerverifiedShow Answer

When OG' = 0 in a chemical reaction, under the conditions

Correct AnswerverifiedShow Answer

Matter and energy flow through the biosphere. The flow of matter, however, differs from the flow of energy. Which of the following statements accurately describes these differences?

Correct AnswerverifiedShow Answer

Which process involves an increase in entropy of the system?

Correct AnswerverifiedA

Which is NOT true of phototrophs?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Muscle contraction is an example of which of the following types of work?

Correct AnswerverifiedShow Answer

Fireflies have the ability to convert the energy in ATP to light. Which of the following types of work is performed by the firefly?

Correct AnswerverifiedShow Answer

Which of the following statements is NOT true of the value OH?

Correct AnswerverifiedShow Answer

Animals that regulate their body temperature independent of the environment are called

Correct AnswerverifiedB

A student drops his notes, and his papers scatter. The fact that the papers scatter and do not remain neatly stacked is an illustration of

Correct AnswerverifiedShow Answer

In a cell, the concentration of glucose- 6- phosphate is 83 µM and fructose- 6- phosphate is 14 µM. The OG°' = 410 cal/mol for the conversion of glucose- 6- phosphate to fructose- 6- phosphate. Based upon this information, the OG' for this reaction (in cal/mol) is

Correct AnswerverifiedShow Answer

Any process that results in an increase in the free energy of the system is called .

Correct AnswerverifiedShow Answer

A spontaneous reaction

Correct AnswerverifiedShow Answer

Which of the following is not a basic need of the cell?

Correct AnswerverifiedShow Answer

A _ is an organism that requires the intake of chemical compounds such as carbohydrates, fats, and proteins.

Correct AnswerverifiedShow Answer

When the OG°' of a chemical reaction is positive (K'eq < 1.0) under standard conditions,

Correct AnswerverifiedShow Answer

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A

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A

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B

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