BCH Final Exam Review Questions And Answers

BCH Final Exam Review r r r


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BCH Final Exam Review Questions And
Answers

1. Which of the following statements regarding hydrogen bonding is FALSE?
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- H-bonding is one of the most important non-covalent bonds in biochemistry.
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- H-
bonds occur in assemblies of proteins where individual supramolecular struct
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ure undergo intermolecular interactions.
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- In an H-bond, the acceptor is a weak acid and the donor is a weak base.
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- The linear overlap of the anti-
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bonding orbital of the donor H and bonding orbital of the acceptor lone pair el
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ectrons is critical to an H-bond r r r r r


- While an individual H-bond is moderately strong, the presence of groups of H-
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bonds contributes to the stability of large biomolecular structures.: Answer: In an
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H-bond, the acceptor is a weak acid and the donor is a weak base.
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2. True or False: Polymer formation from a pool of available monomers with a ran
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ge of chemical functionalities contributes to biochemical molecular com-
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plexity.: True
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3. Which of the following statements about compartmentation is FALSE?
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- By decreasing environmental variability in a microdomain, compartmenta-
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tion promotes life.
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- High concentrations of biomolecules are too energetically expensive to keep wi
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thin a compartment.
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- Compartmentation is necessary to isolate cellular components from the bulk en r r r r r r r r r r


vironment.
- Microdomains form through self- r r r


assembly processes, partitioning the cell into compartments.
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- Chemical evolution would not possible without compartmentation.: Answer: Hi
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gh concentrations of biomolecules are too energetically expensive to keep within a com
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partment.
4. True or False: The optimal bond distance in charge-
r r r r r r r r

1r/r25

, BCH Final Exam Review
r r r


Studyronlineratrhttps://quizlet.com/_bttbr3
charge interactions is determined exclusively by the potential energy of attrac
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tion.: False
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5. The Miller-Urey experiment was conducted in order to...
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- ...simulate the surface of a meteorite.
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- ....demonstrate that life began with the help of lightning as a source of ene
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rgy.
- ...show that the elevated temperature of primordial Earth initiated life.
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- ...demonstrate that buildings blocks of life needed oxygen to form.
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- ...simulate gas exchange from plants that promote life on Earth.: Answer:
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....demonstrate that life began with the help of lightning as a source of energy.
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2r/r25

, 2 (between 2r r




BCH Final Exam Review r r r


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7. What non- r


covalent interaction(s) is/are most likely to occur between water and water?: Hy
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drogen bonding and dipole-dipole ????
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8. Which of the following statements about the Hydrophobic effect is FALSE?
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- Clathrates result in ice-like water, resulting in ”S <0.
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- The formation of a bilayer vesicle from amphiphiles in water results in polar hea
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dgroups facing the aqueous phase. r r r r


- The hydrophobic effect is a driving force for biochemical self-assembly.
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- The hydrophobic effect is driven by the solute, and is considered a non-co-
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valent intermolecular interaction.
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- Reducing the surface area of a clathrate results in an increase in entropy.-
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: Answer:The hydrophobic effect is driven by the solute, and is considered a non-
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covalent intermolecular interaction.
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9. Given the following titration curve for Lysine and indicated p pI f Ka values, the
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or Lysine is:: 10
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10. Given the structure of glycogen below, what is the correct n
r r ame for the r r r r r r r r r r


glycosidic linkage indicated by arrow #1?: ± D
r glucosep(1± ’6) glu cosep
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11. Name the reaction that results in the chemical transformation sh of galactose
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own below.: C6 oxidation
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12. The amino acid depicted below is:: L-Glutamic Acid
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13. The amino acid depicted below is:: L-Tryptophan
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3r/r25