CHEM 210 Biochemistry M2 Complete Review 2026
| Portage Learning | High-Yield Content
1. If a researcher needs to maintain a pH of 5.0 in a lysosome but accidentally
adds a strong acid, what type of solution should they add to counteract the
change?
A strong acid solution.
A weak acid or its conjugate base solution.
A strong base solution.
Pure water.
2. If a biochemist is studying a protein structure and observes that the protein
maintains its shape due to hydrogen bonding, what can be inferred about the
protein's stability?
The protein's stability is unrelated to hydrogen bonding.
The protein's stability is compromised due to the presence of
hydrogen bonds.
The protein's stability is solely dependent on covalent bonds.
The protein's stability is enhanced by hydrogen bonds between its
amino acid residues.
3. What is the hybridization state of the oxygen atom in water?
sp3d
sp
sp3
sp3d2
, sp2
4. A solution with a pH of 5.0 ____ _.
is neutral
has an OH- ion concentration of 1 x 10^-9
is basic
has an H+ ion concentration of 5.0 M
5. Which thermodynamic changes favor the condensation of water vapor into
liquid at 25oC?
ΔS > 0
ΔH > 0
ΔH < 0
ΔS < 0
6. The capacity of a buffer to resist changes in pH upon addition of protons or
hydroxide ions depends on :
the pKa of the weak acid in buffer
the pH of the buffer
the total concentration of the weak acid and its conjugate base in the
buffer
none of the above
all of the above
7. What does a negative Δ G indicate about a chemical reaction?
The reaction is non-spontaneous.
, The reaction is spontaneous.
The reaction requires a catalyst.
The reaction is at equilibrium.
8. In equilibrium constant expressions, what unit is typically used to express
concentration?
Percentage (%)
Molarity (M)
Grams per liter (g/L)
Moles (mol)
9. What is the pH of a 0.015 M NaOH solution?
−1.82
7.00
1.82
12.18
0.015
10. Rank the following in order of decreasing acid strength. (most acidic to least
acidic)
I, II, III
III, I, II
III, II, I
I, III, II
| Portage Learning | High-Yield Content
1. If a researcher needs to maintain a pH of 5.0 in a lysosome but accidentally
adds a strong acid, what type of solution should they add to counteract the
change?
A strong acid solution.
A weak acid or its conjugate base solution.
A strong base solution.
Pure water.
2. If a biochemist is studying a protein structure and observes that the protein
maintains its shape due to hydrogen bonding, what can be inferred about the
protein's stability?
The protein's stability is unrelated to hydrogen bonding.
The protein's stability is compromised due to the presence of
hydrogen bonds.
The protein's stability is solely dependent on covalent bonds.
The protein's stability is enhanced by hydrogen bonds between its
amino acid residues.
3. What is the hybridization state of the oxygen atom in water?
sp3d
sp
sp3
sp3d2
, sp2
4. A solution with a pH of 5.0 ____ _.
is neutral
has an OH- ion concentration of 1 x 10^-9
is basic
has an H+ ion concentration of 5.0 M
5. Which thermodynamic changes favor the condensation of water vapor into
liquid at 25oC?
ΔS > 0
ΔH > 0
ΔH < 0
ΔS < 0
6. The capacity of a buffer to resist changes in pH upon addition of protons or
hydroxide ions depends on :
the pKa of the weak acid in buffer
the pH of the buffer
the total concentration of the weak acid and its conjugate base in the
buffer
none of the above
all of the above
7. What does a negative Δ G indicate about a chemical reaction?
The reaction is non-spontaneous.
, The reaction is spontaneous.
The reaction requires a catalyst.
The reaction is at equilibrium.
8. In equilibrium constant expressions, what unit is typically used to express
concentration?
Percentage (%)
Molarity (M)
Grams per liter (g/L)
Moles (mol)
9. What is the pH of a 0.015 M NaOH solution?
−1.82
7.00
1.82
12.18
0.015
10. Rank the following in order of decreasing acid strength. (most acidic to least
acidic)
I, II, III
III, I, II
III, II, I
I, III, II
