Choose the ONE true statement referring to the following coupled reactions: correct answers Rxn2 (B↔C) is unfavorable in the forward direction on its own, but if coupled to Rxn3 (C↔D), the overall conversion of B to D will occur.
Which of the following is the correct formula for glucose? cor...
BIOC 385- Exam 1 || A+ Verified Solutions.
Choose the ONE true statement referring to the following coupled reactions: correct answers
Rxn2 (B↔C) is unfavorable in the forward direction on its own, but if coupled to Rxn3 (C↔D),
the overall conversion of B to D will occur.
Which of the following is the correct formula for glucose? correct answers C6H12O6
The example of water freezing into ice is an example of _______________. correct answers a
decrease in entropy of the system.
What chemical process is able to take place in the presence of solar energy? correct answers
Photosynthesis
Amino acids are the building blocks for which biomolecules? correct answers Proteins
Select the TWO true statements from the list below regarding the structure and function of
enzymes. correct answers Enzyme cofactors can increase the chemical functionality of enzymes,
which are otherwise limited by the R groups of amino acids.
Enzymes increase the rates of biochemical reactions without changing the equilibrium constant.
Hydrogen bonds form between hydrogen and _______________ or hydrogen and
______________. correct answers oxygen, nitrogen
In the figure below, which state of matter has the highest entropy? correct answers gas phase
The amino acid sequence of a protein determines its structure. Which of the following statements
is true? correct answers Two proteins with nearly identical amino acid sequences should have
very similar protein structures.
How can an energetically unfavorable reaction occur in a metabolic pathway? correct answers
Link it to an energetically favorable reaction.
An example of experimental biochemistry is trying an experiment and _________________.
correct answers optimizing experimental design.
In the following series of reactions, what is the shared intermediate? correct answers fructose-6-P
In the five steps used by photosynthetic organisms to convert solar energy into chemical energy,
which molecules store the solar energy before sugar synthesis? correct answers ATP and
NADPH
2-phosphoglycerate(2PG) is converted to phosphoenolpyruvate (PEP) by the enzyme enolase.
The standard free energy change(deltaGo') for this reaction is +1.7 kJ/mol. If the cellular
, concentrations are 2PG = 0.5 mM and PEP = 0.1 mM, what is the free energy change at 37 oC
for the reaction 2PG ↔ PEP? correct answers -2.4 kJ/mol
If the equilibrium constant (Keq) is greater than 1, which direction will the reaction proceed?
correct answers spontaneously to products
A hydrogen bond can best be described as a ________________. correct answers weak
noncovalent interaction.
Energy conversion in living systems is required for what three types of work? correct answers
Osmotic work, chemical work, mechanical work
In a hydrogen bond between a water molecule and another water molecule ___________. correct
answers the hydrogen bond typically forms between the oxygen atom of the water and the
hydrogen on the other water.
What is the maximum number of covalent bonds a carbon atom can make? correct answers 4
The study of biochemistry attempts to explain_________________. correct answers biological
processes at the molecular and cellular level.
Which of the following best defines the first law of thermodynamics? correct answers Total
amount of energy in the universe is a constant.
Binding of glucose to hexokinase causes a conformational change in the enzyme. This is an
example of the __________ model of enzyme catalysis. correct answers induced fit
The figure below shows an example of which functional group? correct answers phosphoryl
Experimental evidence based on measuring bond energies between DNA strands using all
combinations of G, C, A, and T stacked bases demonstrates that the DNA double helix is
stabilized by noncovalent interactions between nucleotides owing to __________ . correct
answers pi-pi stacking
The function of chloroplasts in plant cells is to convert________________. correct answers light
energy to chemical energy.
R is the highly active form of an allosteric enzyme and T is the less active form of enzyme. What
would happen to [T]/[R] if substrate concentration is decreased? correct answers Increase
Which two functional groups are involved in producing a peptide bond? correct answers amino
and carboxyl
The following pic is an example of what phenomenon? correct answers Resonance energy
transfer
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