BioChem 210 Final Exam 2027 - Portage Learning Question and
Answer | Updated Verified Answers | Study Guide Pack
Question 1.
ΔG
Correct Answer: Gibbs free energy; negative = spontaneous, positive =
non-spontaneous.
Question 2.
Central Dogma
Correct Answer: DNA → RNA → Protein.
Question 3.
Classes of Biomolecules
Correct Answer: Carbohydrates, lipids, proteins, nucleic acids.
Question 4.
Water as a biological solvent
Correct Answer: Dissolves polar and charged molecules using hydration shells.
Question 5.
Polar Molecules
Correct Answer: Unequal electron sharing; dissolve in water.
Question 6.
Nonpolar Molecules
Correct Answer: Equal electron sharing; hydrophobic.
Question 7.
Hydrogen Bonding
Correct Answer: Weak attraction between hydrogen and electronegative
atoms like O or N.
Question 8.
Van Der Wal forces
Correct Answer: Weak, transient dipole interactions.
,Question 9.
Buffering system
Correct Answer: Weak acid/conjugate base resisting pH change.
Question 10.
Henderson-Hasselbalch equation
Correct Answer:
Question 11.
pKa on titration curve
Correct Answer: midpoint of buffering region
Question 12.
Isoelectric Point (Ip)
Correct Answer: pH at which amino acid has net charge of zero.
Question 13.
Hydrophobic effect
Correct Answer: Nonpolar molecules cluster to reduce water ordering.
Question 14.
Essential amino acids
Correct Answer: Must be consumed through diet.
Question 15.
Non-essential amino acids
Correct Answer: Produced by the body.
Question 16.
Peptide bond
Correct Answer: Amide bond between COOH and NH₂ formed by dehydration.
Question 17.
Primary structure
Correct Answer: Amino acid sequence.
, Question 18.
Secondary structure
Correct Answer: α-helix and β-sheet.
• Tertiary structures -✓✓3D folding of a polypeptide chain.
Question 19.
quatenary structure
Correct Answer: Association of multiple polypeptide subunits.
Question 20.
Forces in Protien structure
Correct Answer: Hydrogen bonds, ionic bonds, disulfide bonds, hydrophobic
interactions, Van der Waals.
Question 21.
Protein Denaturation
Correct Answer: Loss of structure from heat, pH, or chemicals.
Question 22.
Hemoglobin function
Correct Answer: O₂ transport; sigmoidal binding curve.
Question 23.
Myoglobin function
Correct Answer: O₂ storage; hyperbolic binding curve.
Question 24.
Enzyme properties
Correct Answer: Catalysts that lower activation energy and increase reaction
rate
Question 25.
Michaelis-Menten Equation
Correct Answer:
Answer | Updated Verified Answers | Study Guide Pack
Question 1.
ΔG
Correct Answer: Gibbs free energy; negative = spontaneous, positive =
non-spontaneous.
Question 2.
Central Dogma
Correct Answer: DNA → RNA → Protein.
Question 3.
Classes of Biomolecules
Correct Answer: Carbohydrates, lipids, proteins, nucleic acids.
Question 4.
Water as a biological solvent
Correct Answer: Dissolves polar and charged molecules using hydration shells.
Question 5.
Polar Molecules
Correct Answer: Unequal electron sharing; dissolve in water.
Question 6.
Nonpolar Molecules
Correct Answer: Equal electron sharing; hydrophobic.
Question 7.
Hydrogen Bonding
Correct Answer: Weak attraction between hydrogen and electronegative
atoms like O or N.
Question 8.
Van Der Wal forces
Correct Answer: Weak, transient dipole interactions.
,Question 9.
Buffering system
Correct Answer: Weak acid/conjugate base resisting pH change.
Question 10.
Henderson-Hasselbalch equation
Correct Answer:
Question 11.
pKa on titration curve
Correct Answer: midpoint of buffering region
Question 12.
Isoelectric Point (Ip)
Correct Answer: pH at which amino acid has net charge of zero.
Question 13.
Hydrophobic effect
Correct Answer: Nonpolar molecules cluster to reduce water ordering.
Question 14.
Essential amino acids
Correct Answer: Must be consumed through diet.
Question 15.
Non-essential amino acids
Correct Answer: Produced by the body.
Question 16.
Peptide bond
Correct Answer: Amide bond between COOH and NH₂ formed by dehydration.
Question 17.
Primary structure
Correct Answer: Amino acid sequence.
, Question 18.
Secondary structure
Correct Answer: α-helix and β-sheet.
• Tertiary structures -✓✓3D folding of a polypeptide chain.
Question 19.
quatenary structure
Correct Answer: Association of multiple polypeptide subunits.
Question 20.
Forces in Protien structure
Correct Answer: Hydrogen bonds, ionic bonds, disulfide bonds, hydrophobic
interactions, Van der Waals.
Question 21.
Protein Denaturation
Correct Answer: Loss of structure from heat, pH, or chemicals.
Question 22.
Hemoglobin function
Correct Answer: O₂ transport; sigmoidal binding curve.
Question 23.
Myoglobin function
Correct Answer: O₂ storage; hyperbolic binding curve.
Question 24.
Enzyme properties
Correct Answer: Catalysts that lower activation energy and increase reaction
rate
Question 25.
Michaelis-Menten Equation
Correct Answer:
