Answer Options:
ΔG equilibrium
endergonic
exothermic
exergonic
isothermic
Answer: exergonic
Question: Consider the following reaction: Pyruvate + NADH + H+ <=> Lactate + NAD+ The half-cell reaction with their standard reduction potentials are Pyruvate + 2H+ + 2e^- => Lactate (-0.190 V) NAD+ + H+ + 2e^- => NADH (-0.320 V) What is the reduction potential for the overall reaction?
Answer Options:
+0.00 V
+0.03 V
+0.13 V
-0.22 V
-0.51 V
Answer: -0.22 V
Question: The presence of which of the following molecules indicates that the cell has sufficient energy reserves?
Answer Options:
ATP
Citrate
ADP
Fructose-2,6-bisphosphate
Answer: ATP
Question: Which of the following amino acids contain a hydrophobic side chain?
Answer Options:
Leucine
Arginine
Glutamic acid
Aspartic acid
Answer: Leucine
Question: Determine the delta G°’ of a reaction at standard pressure, 25 degrees C, and with a Keq of 10 raised to the power of negative 4.
Answer Options:
-28.3 kJ/mol
-13.4 kJ/mol
-5.7 kJ/mol
+5.7 kJ/mol
+11.3 kJ/mol
Answer: +13.4 kJ/mol
Question: What is the Sun made of [approximately by mass]?
Answer Options:
100 percent hydrogen and helium.
90 percent hydrogen, 2.5 percent helium, 2.5 percent other elements.
70 percent helium, 24 percent hydrogen, 2 percent other elements.
70 percent hydrogen, 28 percent helium, 2 percent other elements.
98 percent hydrogen, 2 percent helium and other elements.
Answer: 70 percent hydrogen, 28 percent helium, 2 percent other elements.
Question: The value that is altered when you compare an enzyme catalyzed reaction to a non-enzyme catalyzed reaction is called:
Answer Options:
Ea
delta G
delta G double dagger
delta G naught
Answer: Ea
Question: The preferred energy source of the brain is ________.
Answer Options:
Fructose
Glucose
Aldose
Ketose
Sucrose
Answer: Glucose
Question: A thermodynamically unfavorable reaction can become favorable when coupled to a highly endergonic reaction.
Answer Options:
True
False
Answer: True
Question: The following molecule is an example of which class of compounds? Molecular Structure: CH3(CH2)4COOH
Answer Options:
Hydrocarbon
Acid
Ester
Ether
Aldehyde
Answer: Acid
Question: There are 3 labeled bonds for each amino acid of a protein. Which of the following bonds is non-rotatable?
Answer Options:
Omega
Onepp
Pei
Psi
Epsilon
Answer: Pei