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Intro to Biochem Murphy - Exam 1 2024/2025 Questions With Completed & Verified Solutions.
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Intro to Biochem Murphy - Exam 1 2024/2025 Questions With Completed & Verified Solutions.
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Intro to Biochem Murphy - Exam 1Which of the following is the only macromolecule of the 4 we covered that doesn't form a
continuous polymer of undefined length?
A. Nucleic Acids
B. Proteins
C. Lipids
D. Polysaccharides
E. None of the above - ANS C. Lipids
The reaction that catalyzes the polymerization of carbohydrates and proteins are both what kind
of reaction?
A. Redox reactions
B. Condensation reactions
C. Hydration reactions
D. Peptide bonds
E. Lyase reactions - ANS B. Condensation reactions
The picture above represents which of the 4 major biomolecules?
A. Proteins
B. Nucleic Acids
C. Lipids
D. Carbohydrates
E. None of the above - ANS A. Proteins
Which of the following is the basic structural unit of living organisms?
A. Nucleus
B. Cell membrane
C. Tissue
D. Cell
E. Cytoskeleton - ANS D. Cell
Which of the following is NOT an organelle?
A. Mitochondria
B. Chloroplast
C. Nucleus
D. Plasma Membrane
E. Golgi complex - ANS D. Plasma membrane
Prokaryotes and Eukaryotes differ in all of the following EXCEPT for having ________?
A. flagella
B. all aerobic metabolism
, C. the amount of discrete organelles
D. an endomembrane system
E. true nucleus - ANS A. flagella
Which of the following is true about van der Waals interactions?
A. van der Waals interactions are predominantly found in polar molecules
B. they are the strongest of the noncovalent interactions
C. a strong interaction between hydrogen and oxygen or nitrogen comparable to ionic bonds
D. there is a critical distance between two atoms where their attractions are maximized
E. they are a bond between two hydrogens - ANS D. there is a critical distance between two
atoms where their attractions are maximized
Which of the following is NOT a type of weak interaction?
A. Dipole-dipole interactions
B. Dipole-induced dipole interactions
C. Induced dipole-induced dipole interactions
D. Disulfide bonds
E. Hydrogen bonds - ANS D. Disulfide bonds
What type of non-covalent interaction is depicted in the following image?
A. Hydrogen bonding
B. Dipole-induced dipole
C. van der Waals
D. Charge-induced dipole
E. Charge-dipole - ANS C. van der Waals
The tendency of nonpolar molecules to aggregate in a water medium is called?
A. Crenation
B. Hydrophobic effect
C. Hydrophilic effect
D. Micellular effect
E. Amphiatic - ANS B. Hydrophobic effect
Which statements regarding the Henderson-Hasselbalch equation are true?
1.) If the pH of the solution is known as is the pKa for the acid, the ratio of conjugate base to
acid can be determined
2.) At pH = pKa for an acid, there is an equal amount of conjugate base to acid in solution
3.) At pH >> pKa for an acid, the acid will be mostly ionized
4.) At pH << pKa for an acid, the acid will be mostly ionized - ANS 1, 2, and 3 are true
Which of the following are reduced forms of electron carriers found in the body?
A. NAD+
B. FADH2
C. ATP
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