Think you’ve got your head wrapped around Energy Flow and Enzymes? Put your knowledge to
the test. Good luck — the Stickman is counting on you!
Q. Which of the following is NOT true about enzymes?
They lower the activation energy of a reaction.
They are not consumed during the reaction.
They are not modified in the course of a reaction.
They speed up the rate of the reaction.
They make the ΔG of the reaction negative.
Q. If you know that a reaction greatly increases the entropy of a system,
then you know that the ΔG of the reaction must be negative.
then you know that the ΔG of the reaction must be positive.
the reaction will proceed spontaneously.
the reaction will not proceed spontaneously.
the reaction will likely proceed spontaneously, but you still need to take into account the ΔH value.
Q. Which of the following are not consumed or created in a biochemical reaction?
Reactants
Products
Enzymes
Substrates
All of the above are consumed in a reaction.
Q. An atom that has been reduced has
gained an electron.
lost an electron.
gained oxygen.
lost oxygen.
lost a proton.
Q. Which of the following remains constant in the universe?
Entropy
Fossil fuels
Energy
Mechanical energy
Potential energy
Q. A protein will
always become more disordered.
never be governed by the laws of thermodynamics.
always form a complex with other proteins.
form a structure that is in its highest achievable energy state.
form a structure that is in its lowest achievable energy state.
Q. Chaperones are proteins that
make RNA.
help a protein fold into its lowest possible energy state.
help a protein fold into its highest possible energy state.
are quickly degraded.
always stay around for a long time in the cell.
Q. Which of the following is the best indicator that a reaction will occur spontaneously?
ΔG = 0
ΔG < 0
ΔG > 0
TΔS < 0
TΔS > 0
Q. The active site is
a specific regulatory region where a regulatory protein will bind to the enzyme.
a cofactor that binds to an enzyme.
a place where the enzyme folds in half.
a specific site on an enzyme where only a particular substrate will bind.
how a protein finds its lowest energy conformation.
Q. Hydrophilic molecules are best described as
water-loving.
water-hating.
energetically stable.
energetically unstable.
none of the above.