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Test Bank For Lehninger Principles Of Biochemistry
8th Edition By David L. Nelson

,Latest Test Bank For Lehninger Principles Of Biochemistry,
8th Edition 2023 By David L. Nelson

1. The Dipole Moment In A Water Molecule Which Statement About Hydrogen
Bonds Is NOT True?
A) Hydrogen Bonds Account For The Anomalously High Boiling Point Of Water.
B) In Liquid Water, The Average Water Molecule Forms Hydrogen Bonds With
Three To Four Other Water Molecules.
C) Individual Hydrogen Bonds Are Much Weaker Than Covalent Bonds.
D) Individual Hydrogen Bonds In Liquid Water Exist For Many Seconds
And Sometimes For Minutes.
E) The Strength Of A Hydrogen Bond Depends On The Linearity Of The
Three Atoms Involved In The Bond.


2. A TRUE Statement About Hydrophobic Interactions Is That They:
A) Are The Driving Force In The Formation Of Micelles Of Amphipathic
Compounds In Water.
B) Do Not Contribute To The Structure Of Water-Soluble Proteins.
C) Have Bonding Energies Of Approximately 20–40 Kjoule Per Mole.
D) Involve The Ability Of Water To Denature Proteins.
E) Primarily Involve The Effect Of Polar Solutes On The Entropy Of Aqueous Systems.



3. Hydrophobic Interactions Make Important Energetic Contributions To:
A) Binding Of A Hormone To Its Receptor Protein.
B) Enzyme-Substrate Interactions.
C) Membrane Structure.
D) Three-Dimensional Folding Of A Polypeptide Chain.
E) All Of The Answers Are Correct.



4. Dissolved Solutes Alter Some Physical (Colligative) Properties Of The Solvent
Water Because They Change The:
A) Concentration Of The Water.
B) Hydrogen Bonding Of The Water.
C) Ionic Bonding Of The Water.
D) Ph Of The Water.

Page 1

, E) Temperature Of The Water.



5. Osmosis Is Movement Of A:
A) Charged Solute Molecule (Ion) Across A Membrane.
B) Gas Molecule Across A Membrane.
C) Nonpolar Solute Molecule Across A Membrane.
D) Polar Solute Molecule Across A Membrane.
E) Water Molecule Across A Membrane.



6. A Hydronium Ion:
A) Has The Structure H3O+.
B) Is A Hydrated Hydrogen Ion.
C) Is A Hydrated Proton.
D) Is The Usual Form Of One Of The Dissociation Products Of Water In Solution.
E) All Of The Answers Are Correct.



7. The Ph Of A Solution Of 1 M Hcl Is:
A) 0.
B) 0.1.
C) 1.
D) 10.
E) –1.



8. The Ph Of A Solution Of 0.1 M Naoh Is:
A) 0.1.
B) 1.0.
C) 12.8.
D) 13.
E) 14.

, 9. Which Statement Is TRUE About The Properties Of Aqueous Solutions?
A) A Ph Change From 5.0 To 6.0 Reflects An Increase In The Hydroxide Ion
Concentration ([OH–]) Of 20%.
B) A Ph Change From 8.0 To 6.0 Reflects A Decrease In The Proton Concentration
([H+]) By A Factor Of 100.
C) Charged Molecules Are Generally Insoluble In Water.
D) Hydrogen Bonds Form Readily In Aqueous Solutions.
E) The Ph Can Be Calculated By Adding 7 To The Value Of The Poh.



10. The Ph Of A Sample Of Blood Is 7.4, While Gastric Juice Is Ph 1.4. The Blood Sample
Has:
A) 0.189 Times The [H+] As The Gastric Juice.
B) 5.29 Times Lower [H+] Than The Gastric Juice.
C) 6 Times Lower [H+] Than The Gastric Juice.
D) 6000 Times Lower [H+] Than The Gastric Juice.
E) One Million Times Lower [H+] Than The Gastric Juice.



11. The Aqueous Solution With The LOWEST Ph Is:
A) 0.01 M Hcl.
B) 0.1 M Acetic Acid (Pka = 4.86).
C) 0.1 M Formic Acid (Pka = 3.75).
D) 0.1 M Hcl.
E) 10–12 M Naoh.



12. The Aqueous Solution With The HIGHEST Ph Is:
A) 1 M Hcl.
B) 1 M NH3 (Pka = 9.25).
C) 0.5 M Nahco3 (Pka = 3.77).
D) 0.1 M Naoh.
E) 0.001 M Naoh.

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