Question 1

An endergonic reaction with a ______ $\Delta$H and a ______ $\Delta$S can be changed into an exergonic reaction by decreasing the temperature.

Accepted Answer

A) positive,positive 
B) positive,negative 
C) negative,positive 
D) negative,negative 
A) positive,positive 
B) positive,negative 
C) negative,positive 
D) negative,negative

Question 2

Matching

-The most abundant molecule in the human body is _____.

Accepted Answer

A)  phylogenetic 
B)  negative 
C)  H2O 
D)  ΔH° 
E)  H – TS
F) halobacteria
G) open
H) entropy
I) flux
J) polymers
K) ΔG°´
L) thermophiles
M) nitrogen
N) positive 
A)  phylogenetic 
B)  negative 
C)  H2O 
D)  ΔH° 
E)  H – TS
F) halobacteria
G) open
H) entropy
I) flux
J) polymers
K) ΔG°´
L) thermophiles
M) nitrogen
N) positive

Question 3

A reaction with a ______ $\Delta$H and a ______ $\Delta$S,will never be spontaneous.

Accepted Answer

A) positive,positive 
B) positive,negative 
C) negative,positive 
D) negative,negative 
E) none of the above 
A) positive,positive 
B) positive,negative 
C) negative,positive 
D) negative,negative 
E) none of the above

Question 4

Which of the statements about viruses is not true?

Accepted Answer

A) Viruses are much simpler than cells. 
B) Viruses are the simplest living organisms. 
C) Viruses lack the necessary metabolic apparatus to reproduce. 
D) Viruses are dependent on host cells. 
E) All the statements are true. 
A) Viruses are much simpler than cells. 
B) Viruses are the simplest living organisms. 
C) Viruses lack the necessary metabolic apparatus to reproduce. 
D) Viruses are dependent on host cells. 
E) All the statements are true.

Question 5

Matching

-The organisms most likely to be found in high temperature environments would be ______.

Accepted Answer

A)  phylogenetic 
B)  negative 
C)  H2O 
D)  ΔH° 
E)  H – TS
F) halobacteria
G) open
H) entropy
I) flux
J) polymers
K) ΔG°´
L) thermophiles
M) nitrogen
N) positive 
A)  phylogenetic 
B)  negative 
C)  H2O 
D)  ΔH° 
E)  H – TS
F) halobacteria
G) open
H) entropy
I) flux
J) polymers
K) ΔG°´
L) thermophiles
M) nitrogen
N) positive

Question 6

Phylogeny is

Accepted Answer

A) the science of biological classification based on gross morphology. 
B) the science of biological classification based on the evolutionary relationships between organisms. 
C) the science of biological classification based on reproductive strategies. 
D) the branch of science that studies phyllopods. 
E) none of the above 
A) the science of biological classification based on gross morphology. 
B) the science of biological classification based on the evolutionary relationships between organisms. 
C) the science of biological classification based on reproductive strategies. 
D) the branch of science that studies phyllopods. 
E) none of the above

Question 7

The theory of evolution includes which of the following principles?

Accepted Answer

A) Evolution is not directed toward a specific goal. 
B) Evolution is ongoing,and is constrained by its past. 
C) Evolution requires some sloppiness for adaptation to changes. 
D) A and B 
E) A,B,and C 
A) Evolution is not directed toward a specific goal. 
B) Evolution is ongoing,and is constrained by its past. 
C) Evolution requires some sloppiness for adaptation to changes. 
D) A and B 
E) A,B,and C

Question 8

A spontaneous process

Accepted Answer

A) occurs without the addition of free energy. 
B) has a $\Delta$G<0. 
C) is exergonic. 
D) is all of the above 
E) is none of the above 
A) occurs without the addition of free energy. 
B) has a $\Delta$G<0. 
C) is exergonic. 
D) is all of the above 
E) is none of the above

Question 9

Taxonomy is

Accepted Answer

A) the science of biological classification based on gross morphology. 
B) the science of biological classification based on the evolutionary relationships between organisms. 
C) the science of biological classification based on reproductive strategies. 
D) the branch of science that studies taxidermy. 
E) none of the above 
A) the science of biological classification based on gross morphology. 
B) the science of biological classification based on the evolutionary relationships between organisms. 
C) the science of biological classification based on reproductive strategies. 
D) the branch of science that studies taxidermy. 
E) none of the above

Question 10

Using phylogeny all living organisms can be divided into the following domains:

Accepted Answer

A) bacteria,eukarya,and vertebrate 
B) archaea and eukarya 
C) bacteria,eukarya,and archaea 
D) eukarya and bacteria 
E) none of the above 
A) bacteria,eukarya,and vertebrate 
B) archaea and eukarya 
C) bacteria,eukarya,and archaea 
D) eukarya and bacteria 
E) none of the above

Question 11

Change in enthalpy ($\Delta$H)is best defined as

Accepted Answer

A) the sum of heat absorbed and work done. 
B) the heat transferred at constant pressure. 
C) the pressure change at constant temperature. 
D) the measure of disorder in a system. 
E) none of the above 
A) the sum of heat absorbed and work done. 
B) the heat transferred at constant pressure. 
C) the pressure change at constant temperature. 
D) the measure of disorder in a system. 
E) none of the above

Question 12

Phosphoglucomutase catalyses the reaction in which a phosphate group is transferred from the 1 carbon of glucose to the 6 carbon of glucose (G1P $\leftrightarrows$ G6P).A student at SDSU incubates a 0.2 M solution of glucose-1-phosphate overnight with a small amount of the enzyme.At equilibrium the concentration of glucose 1-phosphate is 9.0 × 10−3 M and the concentration of glucose 6-phosphate is 19.1 × 10−2 M.
Calculate the equilibrium constant (Keq)and the standard state free energy (∆G°')for this reaction at 25°C.

Accepted Answer

The equilibrium constant K_eq

Question 13

Explain in one or two sentences why scientists believe that all living organisms are related (that they have all evolved from a common ancestor)?

Accepted Answer

Biochemically,all li

Question 14

A van't Hoff plot

Accepted Answer

A) plots ln Keq versus T 
B) plots $\Delta$K versus -T$\Delta$S. 
C) plots Keq versus 1/T. 
D) is a good method to determine $\Delta$H° and $\Delta$S°. 
E) determines Keq by plotting $\Delta$H° versus 1/T. 
A) plots ln Keq versus T 
B) plots $\Delta$K versus -T$\Delta$S. 
C) plots Keq versus 1/T. 
D) is a good method to determine $\Delta$H° and $\Delta$S°. 
E) determines Keq by plotting $\Delta$H° versus 1/T.

Question 15

The bulk of aerobic metabolism in eukaryotic cells takes place in

Accepted Answer

A) the endoplasmic reticulum. 
B) the nucleus. 
C) the mitochondria. 
D) peroxisomes. 
E) the Golgi apparatus. 
A) the endoplasmic reticulum. 
B) the nucleus. 
C) the mitochondria. 
D) peroxisomes. 
E) the Golgi apparatus.

Question 16

Which of the following developed during the evolution of eukaryotic cells from prokaryotic cells?

Accepted Answer

A) DNA 
B) the cell membrane 
C) nuclear membranes 
D) ribosomes 
E) proteins 
A) DNA 
B) the cell membrane 
C) nuclear membranes 
D) ribosomes 
E) proteins

Question 17

Lynn Margulis' Theory of Endosymbiosis is an explanation for the origin of

Accepted Answer

A) the endoplasmic reticulum. 
B) the nucleus. 
C) the mitochondria. 
D) peroxisomes. 
E) the Golgi apparatus. 
A) the endoplasmic reticulum. 
B) the nucleus. 
C) the mitochondria. 
D) peroxisomes. 
E) the Golgi apparatus.

Question 18

Consider a reaction in which $\Delta$H = -20.kJ/mol and $\Delta$S = 10.J/mol · K.
a.Calculate the $\Delta$G for this reaction at 25°C.
b.Is the reaction spontaneous (explain your answer)?

Accepted Answer

a.@#LAT-DLM&G = @#LAT-DLM&H − T@#LAT-DLM&S @#LAT-DLM& @#LAT-DLM&G = -20,000 J/mo

Question 19

Halophiles and thermophiles are

Accepted Answer

A) early versions of eukaryotic cells. 
B) highly evolved organisms that thrive in their specific environments. 
C) relatively inefficient and unevolved organisms. 
D) more complex than eukaryotes. 
E) extremely slow growing. 
A) early versions of eukaryotic cells. 
B) highly evolved organisms that thrive in their specific environments. 
C) relatively inefficient and unevolved organisms. 
D) more complex than eukaryotes. 
E) extremely slow growing.

Question 20

The term molecular weight is a term used by biochemists that refers to

Accepted Answer

A) the density of a particle. 
B) a dimensionless quantity that is defined as the ratio of the mass of the particle to 1/12 the mass of a 12C atom. 
C) Daltons divided by the mass of a hydrogen atom. 
D) all of the above 
E) none of the above 
A) the density of a particle. 
B) a dimensionless quantity that is defined as the ratio of the mass of the particle to 1/12 the mass of a 12C atom. 
C) Daltons divided by the mass of a hydrogen atom. 
D) all of the above 
E) none of the above

Exam 1: Introduction to the Chemistry of Life

An endergonic reaction with a ______ Δ\DeltaΔ H and a ______ Δ\DeltaΔ S can be changed into an exergonic reaction by decreasing the temperature.

Matching -The most abundant molecule in the human body is _____.

A reaction with a ______ Δ\DeltaΔ H and a ______ Δ\DeltaΔ S,will never be spontaneous.

Which of the statements about viruses is not true?

Matching -The organisms most likely to be found in high temperature environments would be ______.

Phylogeny is

The theory of evolution includes which of the following principles?

A spontaneous process

Taxonomy is

Using phylogeny all living organisms can be divided into the following domains:

Change in enthalpy ( Δ\DeltaΔ H)is best defined as

Explain in one or two sentences why scientists believe that all living organisms are related (that they have all evolved from a common ancestor)?

A van't Hoff plot

The bulk of aerobic metabolism in eukaryotic cells takes place in

Which of the following developed during the evolution of eukaryotic cells from prokaryotic cells?

Lynn Margulis' Theory of Endosymbiosis is an explanation for the origin of

Consider a reaction in which Δ\DeltaΔ H = -20.kJ/mol and Δ\DeltaΔ S = 10.J/mol · K. a.Calculate the Δ\DeltaΔ G for this reaction at 25°C. b.Is the reaction spontaneous (explain your answer)?

Halophiles and thermophiles are

The term molecular weight is a term used by biochemists that refers to

Water

Nucleotides, nucleic Acids, and Genetic Information

Amino Acids

Proteins: Primary Structure

Proteins: Three-Dimensional Structure

Protein Function Part I: Myoglobin and Hemoglobin

Carbohydrates

Lipids and Biological Membranes

Membrane Transport

Enzyme Catalysis

Enzyme Kinetics, inhibition and Control

Biochemical Signaling

Introduction to Metabolism

Glucose Catabolism

Glycogen Metabolism and Gluconeogenesis

Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Photosynthesis

Lipid Metabolism

Amino Acid Metabolism

Mammalian Fuel Metabolism: Integration and Regulation

Nucleotide Metabolism

Nucleic Acid Structure

DNA Replication, repair and Recombination

Transcription and Rna Processing

Protein Synthesis

Regulation of Gene Expression

Filters

An endergonic reaction with a $\Delta$ H and a $\Delta$ S can be changed into an exergonic reaction by decreasing the temperature.

A reaction with a $\Delta$ H and a $\Delta$ S,will never be spontaneous.

Change in enthalpy ( $\Delta$ H)is best defined as

Consider a reaction in which $\Delta$ H = -20.kJ/mol and $\Delta$ S = 10.J/mol · K. a.Calculate the $\Delta$ G for this reaction at 25°C. b.Is the reaction spontaneous (explain your answer)?