BIOC 385 Exam Questions and Answers Already Passed Latest Update 2025-2026
The difference between and oxidation and a reduction reaction is that oxidation is the ____ and
reduction is the ____ - Answers Loss of electrons, gain of electrons
If the Gibbs free energy for a reaction is less than zero, the reaction is - Answers Exergonic
Flux is defined as the rate at which ___ are interconverted - Answers Metabolites
Enzyme active sites ____ - Answers Are characterized as a pocket or cleft
Which answer correctly identifies the compound with its relationship to aspartame
transcarbamolyase
ATP -allosteric Inhibitor
CTP - allosteric activator
CTP- substrate
ATP- allosteric activator - Answers ATP- allosteric activator
Why did the biosphere 2 project have to be interrupted after 2 months? - Answers CO2 levels
rose too high
In what location of the cell does the Calvin benson cycle occur - Answers chloroplast stroma
Plants can convert sunlight energy into chemical energy, but animals cannot. Eukaryotic plants
and animals can both convert redox energy into chemical energy.
A. What are living organisms trying to put off as long as possible?
B. What metabolic pathway do plants have that animals do not have?
C. What metabolic pathway do both plants and animals use at night? - Answers A. equilibrium
B. Photosynthesis
C. Aerobic respiration
Is the net reaction favorable for the following series of coupled reactions?
Phosphoenolpyruvate + H20 --> pyruvate + pi = -62.2
ADP + pi --> ATP + H20 = 30.5 kj/mol - Answers yes delta G is less than 0
glucose formula - Answers C6H12O6
which state of matter has the highest entropy - Answers gas
, amino acids are the building blocks of what biomolecules - Answers proteins
which condition is most likely to increase the rate of metabolic flux through a linear pathway?
A. formation of a multienzyme complex consisting of all pathway enzymes
B. increased concentrations of the final product generated by the pathway?
C. high concentrations of the final product generated by the pathway
D. coupling of a highly favorable reaction to a less favorable reaction
E. Decreased substrate concentrations for the first reaction in the path - Answers A
The o2 generated from photosynthesis is derived from - Answers water molecules that directly
reduce PS2
Some metabolic pathways use enzymes that are colocalized in membranes to facilitate reaction
rate. Shared intermediates are used so effectively in these types of coupled reactions because
they - Answers Facilitate products being used as reactants without diffusing any
Binding of glucose to hexokinase causes a conformational change in the enzyme. This is an
example of the ____ model of enzyme catalysis. - Answers induced fit
Experimental evidence based on measuring bond energies between DNA strands using all
combinations of C, G, A, and T stacked bases demonstrates that the DNA double helix is
stabilized by noncovalent interactions between nucleotides owing to - Answers pi-pi stacking
As a protein folds, what are the stabilizing forces that help keep the protein from spontaneously
unfolding - Answers Hydrophobic amino acids in the interior and hydrophobic amino acids on
the exterior
Flux is defined as the rate at which __________ is/are interconverted. - Answers metabolites
Hydrogen bonds form between hydrogen and ____ or hydrogen and ____ - Answers oxygen,
nitrogen
Light activation of the chloroplast electron transport system, located in the (1) results in proton
translocation into the (2). The oxidation of h20 takes place in the (3) and generates protons
which contribute to the differential proton gradient across the (4). The delta PH across the (5)
causes protons to flow (6) through the chloroplast (7), leading to ATP synthesis in the (8). The
final electron acceptor is (9) which accepts a pair of electrons to produce NADPH in the (10).
The calvin-benson cycle in the (11) uses the (12) and NADPH produced by the photosynthesis
electron transport system to convert (13) co2 to (14_) which is used to synthesize sucrose -
Answers 1. thylakoid membrane
2. thylakoid lumen
The difference between and oxidation and a reduction reaction is that oxidation is the ____ and
reduction is the ____ - Answers Loss of electrons, gain of electrons
If the Gibbs free energy for a reaction is less than zero, the reaction is - Answers Exergonic
Flux is defined as the rate at which ___ are interconverted - Answers Metabolites
Enzyme active sites ____ - Answers Are characterized as a pocket or cleft
Which answer correctly identifies the compound with its relationship to aspartame
transcarbamolyase
ATP -allosteric Inhibitor
CTP - allosteric activator
CTP- substrate
ATP- allosteric activator - Answers ATP- allosteric activator
Why did the biosphere 2 project have to be interrupted after 2 months? - Answers CO2 levels
rose too high
In what location of the cell does the Calvin benson cycle occur - Answers chloroplast stroma
Plants can convert sunlight energy into chemical energy, but animals cannot. Eukaryotic plants
and animals can both convert redox energy into chemical energy.
A. What are living organisms trying to put off as long as possible?
B. What metabolic pathway do plants have that animals do not have?
C. What metabolic pathway do both plants and animals use at night? - Answers A. equilibrium
B. Photosynthesis
C. Aerobic respiration
Is the net reaction favorable for the following series of coupled reactions?
Phosphoenolpyruvate + H20 --> pyruvate + pi = -62.2
ADP + pi --> ATP + H20 = 30.5 kj/mol - Answers yes delta G is less than 0
glucose formula - Answers C6H12O6
which state of matter has the highest entropy - Answers gas
, amino acids are the building blocks of what biomolecules - Answers proteins
which condition is most likely to increase the rate of metabolic flux through a linear pathway?
A. formation of a multienzyme complex consisting of all pathway enzymes
B. increased concentrations of the final product generated by the pathway?
C. high concentrations of the final product generated by the pathway
D. coupling of a highly favorable reaction to a less favorable reaction
E. Decreased substrate concentrations for the first reaction in the path - Answers A
The o2 generated from photosynthesis is derived from - Answers water molecules that directly
reduce PS2
Some metabolic pathways use enzymes that are colocalized in membranes to facilitate reaction
rate. Shared intermediates are used so effectively in these types of coupled reactions because
they - Answers Facilitate products being used as reactants without diffusing any
Binding of glucose to hexokinase causes a conformational change in the enzyme. This is an
example of the ____ model of enzyme catalysis. - Answers induced fit
Experimental evidence based on measuring bond energies between DNA strands using all
combinations of C, G, A, and T stacked bases demonstrates that the DNA double helix is
stabilized by noncovalent interactions between nucleotides owing to - Answers pi-pi stacking
As a protein folds, what are the stabilizing forces that help keep the protein from spontaneously
unfolding - Answers Hydrophobic amino acids in the interior and hydrophobic amino acids on
the exterior
Flux is defined as the rate at which __________ is/are interconverted. - Answers metabolites
Hydrogen bonds form between hydrogen and ____ or hydrogen and ____ - Answers oxygen,
nitrogen
Light activation of the chloroplast electron transport system, located in the (1) results in proton
translocation into the (2). The oxidation of h20 takes place in the (3) and generates protons
which contribute to the differential proton gradient across the (4). The delta PH across the (5)
causes protons to flow (6) through the chloroplast (7), leading to ATP synthesis in the (8). The
final electron acceptor is (9) which accepts a pair of electrons to produce NADPH in the (10).
The calvin-benson cycle in the (11) uses the (12) and NADPH produced by the photosynthesis
electron transport system to convert (13) co2 to (14_) which is used to synthesize sucrose -
Answers 1. thylakoid membrane
2. thylakoid lumen
