Question 1

The steady state so vital to life is possible because

Accepted Answer

A) the cell continually takes up energy from the environment. 
B) all reactions are exothermic. 
C) all cells are autotrophic. 
D) the cell cannot convert energy from one form to another. 
E) all reactions are at equilibrium. 
A) the cell continually takes up energy from the environment. 
B) all reactions are exothermic. 
C) all cells are autotrophic. 
D) the cell cannot convert energy from one form to another. 
E) all reactions are at equilibrium.

Question 2

Which of the following is a phototroph?

Accepted Answer

A) an earthworm 
B) bacteria growing on decomposing matter 
C) a mushroom 
D) a person 
E) a tree 
A) an earthworm 
B) bacteria growing on decomposing matter 
C) a mushroom 
D) a person 
E) a tree

Question 3

Aerobic refers to what property of chemotrophs?

Accepted Answer

A) Chemotrophs use, but do NOT require oxygen. 
B) Heat losses occur in the presence of oxygen. 
C) Chemotrophs require oxygen to produce energy. 
D) Fermentation releases great amounts of gas, but only in chemotrophs. 
E) Chemotrophs remove carbon dioxide from the air. 
A) Chemotrophs use, but do NOT require oxygen. 
B) Heat losses occur in the presence of oxygen. 
C) Chemotrophs require oxygen to produce energy. 
D) Fermentation releases great amounts of gas, but only in chemotrophs. 
E) Chemotrophs remove carbon dioxide from the air.

Question 4

Oxidation

Accepted Answer

A) is when oxygen is added and energy released. 
B) involves the removal of oxygen atoms. 
C) is endothermic. 
D) occurs when an atom accepts electrons. 
E) both B and C 
A) is when oxygen is added and energy released. 
B) involves the removal of oxygen atoms. 
C) is endothermic. 
D) occurs when an atom accepts electrons. 
E) both B and C

Question 5

A _ _ is the amount of energy required to warm 1 gram of water 1 degree Celsius.

Accepted Answer

The answer of A _ _ is the amount of...

Question 6

A negative free energy change indicates that

Accepted Answer

A) energy must be added to the reaction before it can proceed. 
B) the reaction is at equilibrium. 
C) the reaction is not possible. 
D) the reaction is exothermic. 
E) the reactant is predominant at equilibrium. 
A) energy must be added to the reaction before it can proceed. 
B) the reaction is at equilibrium. 
C) the reaction is not possible. 
D) the reaction is exothermic. 
E) the reactant is predominant at equilibrium.

Question 7

The statement, "Energy is neither created or destroyed," describes

Accepted Answer

A) the first law of thermodynamics. 
B) enthalpy. 
C) the law of conservation of energy. 
D) the second law of thermodynamics. 
E) both A and C 
A) the first law of thermodynamics. 
B) enthalpy. 
C) the law of conservation of energy. 
D) the second law of thermodynamics. 
E) both A and C

Question 8

Which of the following is defined as "heat content?"

Accepted Answer

A) solar radiation 
B) enthalpy 
C) energy output 
D) entropy 
E) heat loss 
A) solar radiation 
B) enthalpy 
C) energy output 
D) entropy 
E) heat loss

Question 9

The voodoo lily (Sauromatum gattatum)is able to

Accepted Answer

A) emit a foul odor to attract pollinators. 
B) trick the pollinators into thinking it is rotting meat. 
C) utilize metabolic heat. 
D) be pollinated by flies. 
E) all of the above 
A) emit a foul odor to attract pollinators. 
B) trick the pollinators into thinking it is rotting meat. 
C) utilize metabolic heat. 
D) be pollinated by flies. 
E) all of the above

Question 10

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

Accepted Answer

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

Question 11

Under the conditions of a given reaction, a positive OG' means

Accepted Answer

A) the reaction is spontaneous. 
B) work can be done. 
C) the reaction will not occur. 
D) the reaction is at equilibrium. 
E) no energy needs to be added. 
A) the reaction is spontaneous. 
B) work can be done. 
C) the reaction will not occur. 
D) the reaction is at equilibrium. 
E) no energy needs to be added.

Question 12

Energy is important to life forms because

Accepted Answer

A) it is required to do work. 
B) all life forms require a continuous supply of it. 
C) it is required to make specific alterations in the cell. 
D) both A and B 
E) choices A, B, and C 
A) it is required to do work. 
B) all life forms require a continuous supply of it. 
C) it is required to make specific alterations in the cell. 
D) both A and B 
E) choices A, B, and C

Question 13

Any process that results in a decrease in the free energy of the system is called .

Accepted Answer

The answer of Any process that results in a decrease...

Question 14

is the partial measure of the internal energy of a system; also known as heat content.

Accepted Answer

The answer of is the partial measure of the internal...

Question 15

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

Accepted Answer

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

Question 16

In a biochemical reaction, reactants may be converted into products. The extent to which this occurs spontaneously is expressed as which of the following?

Accepted Answer

A) OS 
B) temperature 
C) TOS 
D) Keq 
E) OG 
A) OS 
B) temperature 
C) TOS 
D) Keq 
E) OG

Question 17

Which of the following types of work involves a change in position of the cell or a cell structure?

Accepted Answer

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

Question 18

Photosynthesis is an important process that

Accepted Answer

A) uses water and carbon dioxide as reactants. 
B) is performed by organisms living near deep- ocean thermal vents. 
C) only plants can perform. 
D) produces oxidized products. 
E) is performed by heterotrophs. 
A) uses water and carbon dioxide as reactants. 
B) is performed by organisms living near deep- ocean thermal vents. 
C) only plants can perform. 
D) produces oxidized products. 
E) is performed by heterotrophs.

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

The steady state so vital to life is possible because

Which of the following is a phototroph?

Aerobic refers to what property of chemotrophs?

Oxidation

A _ _ is the amount of energy required to warm 1 gram of water 1 degree Celsius.

A negative free energy change indicates that

The statement, "Energy is neither created or destroyed," describes

Which of the following is defined as "heat content?"

The voodoo lily (Sauromatum gattatum)is able to

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

Under the conditions of a given reaction, a positive OG' means

Energy is important to life forms because

Any process that results in a decrease in the free energy of the system is called .

is the partial measure of the internal energy of a system; also known as heat content.

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

In a biochemical reaction, reactants may be converted into products. The extent to which this occurs spontaneously is expressed as which of the following?

Which of the following types of work involves a change in position of the cell or a cell structure?

Photosynthesis is an important process that

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: I Electrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Ii Messengers and Receptors

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesion, 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: I the Genetic Code and Transcription

Gene Expression: II Protein Synthesis and Sorting

The Regulation of Gene Expression

Cancer Cells

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