Test Bank for Molecular Cell
Biology 2026 Complete Questions &
Answers Latest Update 100%
Verified
‣ What are the 4 key concepts of the Chemistry of Life . Answer:
Molecular Complementarity
Chemical Building Blocks
Chemical Equilibrium
Chemical Bond Energy
‣ Explain the thalidomide tragedy . Answer: R(+) used for sedative
effects
S(-) stereoisomer was reported to be teratogenic, causing birth defects
‣ What amino acids do living systems use? Answer: L amino acids
‣ What is the product of ATP degradation called? Answer:
Pyrophosphate
‣ What causes the dipole moment of water . Answer: The differences in
electronegativity of H and O
,‣ He are the 4 main types of noncovalent interactions . Answer: Ionic
Interactions
Hydrogen Bonds
Van der Waals Interactions
Interactions due to the Hydrophobic Effect
‣ How do geckos defy gravity? . Answer: Van der Waals on their pads
are strong enough due to increased surface area by nanoscopic structures
called spatulae on their pads
‣ What causes nonpolar molecules to adhere to each other? . Answer:
The Hydrophobic Effect
‣ What causes molecular complementarity and the binding of proteins? .
Answer: Noncovalent interactions
‣ What is the difference between molecular complementarity and
complementation? . Answer: Molecular Complementarity is proteins,
while complementation is DNA based pairing
‣ What are the special amino acids, and what makes them special? .
Answer: Cysteine (Disulfide Bridges), Glycine (flexible), and Proline
(forms kinks/bends)
, ‣ What are common postranslational modifications of amino acid side
chains in proteins? . Answer: Phosphorylation, Hydroxylation,
Carboxylarion, and Acetylation
‣ What are features of common modifications of amino acids . Answer:
They are reversible and help distinguish proteins
‣ What is the difference between nucleotides and nucleosides? . Answer:
Nucleotides have a nitrogenous base, sugar, and a phosphate group
whereas nucleosides have no phosphate group.
‣ Be able to distinguish ribose and deoxyribose . Answer: (2' is -OH in
ribose or -H in ribose)
‣ How can you distinguish between the 4 nitrogenous bases? . Answer:
Adenine has a nitrogen where Guanine has a double bonded O.
Uracil and thymine have 2 double bonded O's, uracil has no methyl on
the 5th carbon, and Cytosine has one double bonded O
‣ What separates the abbreviations of RNA and DNA? . Answer: dNTP
(DNA) vs. NTP (RNA)
‣ What carbon is the OH down on in glucose? . Answer: Carbon 2, the
2nd one from the right to the ether O
Biology 2026 Complete Questions &
Answers Latest Update 100%
Verified
‣ What are the 4 key concepts of the Chemistry of Life . Answer:
Molecular Complementarity
Chemical Building Blocks
Chemical Equilibrium
Chemical Bond Energy
‣ Explain the thalidomide tragedy . Answer: R(+) used for sedative
effects
S(-) stereoisomer was reported to be teratogenic, causing birth defects
‣ What amino acids do living systems use? Answer: L amino acids
‣ What is the product of ATP degradation called? Answer:
Pyrophosphate
‣ What causes the dipole moment of water . Answer: The differences in
electronegativity of H and O
,‣ He are the 4 main types of noncovalent interactions . Answer: Ionic
Interactions
Hydrogen Bonds
Van der Waals Interactions
Interactions due to the Hydrophobic Effect
‣ How do geckos defy gravity? . Answer: Van der Waals on their pads
are strong enough due to increased surface area by nanoscopic structures
called spatulae on their pads
‣ What causes nonpolar molecules to adhere to each other? . Answer:
The Hydrophobic Effect
‣ What causes molecular complementarity and the binding of proteins? .
Answer: Noncovalent interactions
‣ What is the difference between molecular complementarity and
complementation? . Answer: Molecular Complementarity is proteins,
while complementation is DNA based pairing
‣ What are the special amino acids, and what makes them special? .
Answer: Cysteine (Disulfide Bridges), Glycine (flexible), and Proline
(forms kinks/bends)
, ‣ What are common postranslational modifications of amino acid side
chains in proteins? . Answer: Phosphorylation, Hydroxylation,
Carboxylarion, and Acetylation
‣ What are features of common modifications of amino acids . Answer:
They are reversible and help distinguish proteins
‣ What is the difference between nucleotides and nucleosides? . Answer:
Nucleotides have a nitrogenous base, sugar, and a phosphate group
whereas nucleosides have no phosphate group.
‣ Be able to distinguish ribose and deoxyribose . Answer: (2' is -OH in
ribose or -H in ribose)
‣ How can you distinguish between the 4 nitrogenous bases? . Answer:
Adenine has a nitrogen where Guanine has a double bonded O.
Uracil and thymine have 2 double bonded O's, uracil has no methyl on
the 5th carbon, and Cytosine has one double bonded O
‣ What separates the abbreviations of RNA and DNA? . Answer: dNTP
(DNA) vs. NTP (RNA)
‣ What carbon is the OH down on in glucose? . Answer: Carbon 2, the
2nd one from the right to the ether O
