Question 1

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

Accepted Answer

anaerobic

Question 2

Reduction involves the

Accepted Answer

A) loss of neutrons. 
B) gain of electrons. 
C) increase in oxidation state. 
D) both choices B and C 
E) all of the above 
A) loss of neutrons. 
B) gain of electrons. 
C) increase in oxidation state. 
D) both choices B and C 
E) all of the above B

Question 3

Bioenergetics can be simply defined as

Accepted Answer

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

Question 4

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

Accepted Answer

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

Question 5

In a reversible reaction at equilibrium,the concentration of R (the reactant)is 3.0 mol/L and the concentration of P (the product)is 0.9 mol/L.At 25°C,what would be the Keq?

Accepted Answer

A) 1.5 
B) 0.3 
C) 1.0 
D) 3.0 
E) 37.5 
A) 1.5 
B) 0.3 
C) 1.0 
D) 3.0 
E) 37.5

Question 6

There are different types of biological work.Can you identify the type of work illustrated by the examples below?
a.A man lifts a barbell.
b.A sea creature glows in the dark.
c.Green plants perform carbon fixation.
d.During respiration,protons are transported across the membrane of the mitochondrion.
e.Humans maintain a constant body temperature.
f.Sodium is accumulated inside a cell.
g.A neuron transmits an impulse to a muscle cell.
h.Chromosomes are moved along the spindle fibers during mitosis.

Accepted Answer

a.mechanical work
b.biolumines

Question 7

In every physical or chemical change,energy cannot be created nor destroyed.This is the ________ law of thermodynamics.

Accepted Answer

The answer of In every physical or chemical change,energy cannot...

Question 8

The form of energy that is available to living organisms is in the form of

Accepted Answer

A) sunlight. 
B) radiation. 
C) chemical bonds. 
D) nuclear energy. 
E) heat. 
A) sunlight. 
B) radiation. 
C) chemical bonds. 
D) nuclear energy. 
E) heat.

Question 9

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

Question 10

Identify each of the following examples as phototrophs or chemotrophs.If the example is a chemotroph,indicate whether the needs of the chemotroph are met with or without oxygen (aerobic and anaerobic).
a.A pine tree grows in a forest.
b.A wolf eats the remains of a deer.
c.Bacteria consume a rotting tree.
d.Bacteria grow in an unopened can of green beans.
e.A mushroom grows among pine needles.
f.Cyanobacteria are growing in a lake.
g.A woman goes jogging for one hour.
h.Microorganisms grow near a deep-ocean thermal vent.

Accepted Answer

a.phototroph
b.chemotroph,aero

Question 11

The standard state of dilute aqueous solutions is at a temperature of ________°C (298 K),________ atmosphere(s)of pressure,and with products and reactants present in concentration of ________ mol/L.

Accepted Answer

The answer of The standard state of dilute aqueous solutions...

Question 12

Match between columns
                        Premises: ∆G
J
∆S
∆H
∆G˚′
Keq

Accepted Answer

The Answer of change in stored energy and change in is...

Question 13

When ΔG' = 0 in a chemical reaction,under standard conditions,

Accepted Answer

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

Question 14

Which of the following is an endothermic process?

Accepted Answer

A) combustion reactions 
B) adding a strong acid directly to water 
C) oxidation of metals 
D) ice melting 
E) neutralization reactions of the addition of strong acid directly to a strong base 
A) combustion reactions 
B) adding a strong acid directly to water 
C) oxidation of metals 
D) ice melting 
E) neutralization reactions of the addition of strong acid directly to a strong base

Question 15

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

Question 16

Which of the following statements is not true of the value ΔH?

Accepted Answer

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

Question 17

Match between columns
                        Premises: electrical work
heat
concentration work
synthetic work
mechanical work
bioluminescence

Accepted Answer

The Answer of luminous toadstools and nerve impulse conduction and is...

Question 18

A spontaneous reaction

Accepted Answer

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

Question 19

In a chemical reaction,the standard free energy change (ΔG°')is calculated to be 3.67 cal/mol.What can be said of the chemical reaction?

Accepted Answer

A) The reaction is at equilibrium under standard conditions. 
B) The reaction goes spontaneously to the right under standard conditions. 
C) The reaction is not spontaneous under standard conditions. 
D) Products predominate over reactants at equilibrium under standard conditions. 
E) There can be no reaction. 
A) The reaction is at equilibrium under standard conditions. 
B) The reaction goes spontaneously to the right under standard conditions. 
C) The reaction is not spontaneous under standard conditions. 
D) Products predominate over reactants at equilibrium under standard conditions. 
E) There can be no reaction.

Question 20

________ reactions require an input of energy when electrons are gained,such as in the conversion CO₂ → CH₄.

Accepted Answer

The answer of ________ reactions require an input of energy...

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

Reduction involves the

Bioenergetics can be simply defined as

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

In a reversible reaction at equilibrium,the concentration of R (the reactant)is 3.0 mol/L and the concentration of P (the product)is 0.9 mol/L.At 25°C,what would be the Keq?

In every physical or chemical change,energy cannot be created nor destroyed.This is the ________ law of thermodynamics.

The form of energy that is available to living organisms is in the form of

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?

The standard state of dilute aqueous solutions is at a temperature of °C (298 K), atmosphere(s)of pressure,and with products and reactants present in concentration of mol/L.

When ΔG' = 0 in a chemical reaction,under standard conditions,

Which of the following is an endothermic process?

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

Which of the following statements is not true of the value ΔH?

A spontaneous reaction

In a chemical reaction,the standard free energy change (ΔG°')is calculated to be 3.67 cal/mol.What can be said of the chemical reaction?

________ reactions require an input of energy when electrons are gained,such as in the conversion CO₂ → CH₄.

A Preview of the Cell

The Chemistry of the Cell

The Macromolecules of the Cell

Cells and Organelles

Enzymes: the Catalysts of Life

Membranes: Their Structure, function, and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

Phototrophic Energy Metabolism: Photosynthesis

The Endomembrane System and Peroxisomes

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: DNA, chromosomes, and the Nucleus

The Cell Cycle, DNA Replication, and Mitosis

Sexual Reproduction, meiosis, and Genetic Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Cancer Cells

Filters

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 ________.

Reduction involves the

Bioenergetics can be simply defined as

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

In a reversible reaction at equilibrium,the concentration of R (the reactant)is 3.0 mol/L and the concentration of P (the product)is 0.9 mol/L.At 25°C,what would be the Keq?

In every physical or chemical change,energy cannot be created nor destroyed.This is the ________ law of thermodynamics.

The form of energy that is available to living organisms is in the form of

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?

The standard state of dilute aqueous solutions is at a temperature of ________°C (298 K),________ atmosphere(s)of pressure,and with products and reactants present in concentration of ________ mol/L.

When ΔG' = 0 in a chemical reaction,under standard conditions,

Which of the following is an endothermic process?

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

Which of the following statements is not true of the value ΔH?

A spontaneous reaction

In a chemical reaction,the standard free energy change (ΔG°')is calculated to be 3.67 cal/mol.What can be said of the chemical reaction?

________ reactions require an input of energy when electrons are gained,such as in the conversion CO₂ → CH₄.

A Preview of the Cell

The Chemistry of the Cell

The Macromolecules of the Cell

Cells and Organelles

Enzymes: the Catalysts of Life

Membranes: Their Structure, function, and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

Phototrophic Energy Metabolism: Photosynthesis

The Endomembrane System and Peroxisomes

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: DNA, chromosomes, and the Nucleus

The Cell Cycle, DNA Replication, and Mitosis

Sexual Reproduction, meiosis, and Genetic Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Cancer Cells

Filters

The standard state of dilute aqueous solutions is at a temperature of °C (298 K), atmosphere(s)of pressure,and with products and reactants present in concentration of mol/L.