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Home ‣ Biochemistry ‣ Water, pH and Macromolecules Comments
- Question
Which of the following will easily dissolve in a polar solvent?
Options- A. gasoline (heptanes & octanes)
- B. methane
- C. argon
- D. sodium chloride
- Correct Answer
- sodium chloride
- 1. Which of the following indicates that the pK of an acid is numerically equal to the pH of the solution when the molar concentration of the acid and its conjugate base are equal?
Options- A. Michaelis-Menten equation
- B. Haldanes equation
- C. Henderson-Hasselbalch equation
- D. Hardy-Windberg law Discuss
- 2. Which of the following statements about covalently bonded molecules is false?
Options- A. Electrons are shared between the atoms that make up the molecule
- B. Noncovalent bonds may also be present, especially if the molecule is large
- C. Such molecules often result from the interaction of ionized atoms
- D. The chemical bonds that hold the molecule together are relatively strong Discuss
- 3. The lone pair electrons on oxygen in a H20 molecule
Options- A. carry a partial positive charge
- B. are not important for the properties of water
- C. carry a partial negative charge
- D. form covalent bonds in ice Discuss
- 4. Hydrogen bonds and hydrophilic interactions are types of
Options- A. weak chemical bonds that hold together the atoms within a molecule
- B. strong chemical bonds that hold together the atoms within a molecule
- C. weak chemical bonds that link together separate molecules
- D. strong chemical bonds that link together separate molecules Discuss
- 5. Who discovered and described the blood groups (ABO) classification?
Options- A. Theodor Kocher
- B. Karl Landsteiner
- C. Otto Warburg
- D. Karl Hooper Discuss
- 6. Weak acids generally have pKa
Options- A. values less than 1
- B. pKa values greater than 2
- C. been seldom found in living systems
- D. that cannot be used to buffer Discuss
Water, pH and Macromolecules problems
Search Results
Correct Answer: Henderson-Hasselbalch equation
Correct Answer: Such molecules often result from the interaction of ionized atoms
Correct Answer: carry a partial negative charge
Correct Answer: weak chemical bonds that link together separate molecules
Correct Answer: Karl Landsteiner
Correct Answer: pKa values greater than 2
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