Biochemistry Module 2 Exam Questions With Answers Written Correctly

Biochemistry Module 2 Exam Questions
With Answers Written Correctly

Which of the following is the free-energy change of a reaction?

A) ΔG

B) ΔS

C) ΔH

D) ΔF

E) All of the above - ✔✔✔✔A. ΔG



Which of the following is the change in entropy of a reaction?

A) ΔG

B) ΔE

C) ΔH

D) ΔF

E) None of the above - ✔✔✔✔E. None of the above



Which buffer system is used by the renal system to maintain pH balance? - ✔✔✔✔Bicarbonate buffer
system



A buffer can neutralize only a certain amount of acid and base. We say that this is its: - ✔✔✔✔Buffer
Capacity



Is a pH of 3.91 acidic, neutral, or basic? - ✔✔✔✔Acidic



The "ion product" is equal to what value?



A. 1.0 x 10-4

, B. 1.0 x 10-14

C. 2.1 x 10-7

D. 5.6 X 10-13

E. None of the above - ✔✔✔✔B. 1.0 x 10-14



The pH of a solution of 3.2 x 10-10 M NaOH is:

A. 3.7

B. 3.7 x 10-10

C. 4.5

D. 13

E. 8.7 - ✔✔✔✔C. 4.5



Which attribute contributes to water's unusual properties?

A. The geometry of the molecule

B. The polarity of the O-H bonds

C. The ability of water molecules to hydrogen bond

D. The bond angle of water

E. All of the answers are correct - ✔✔✔✔E. All of the answers are correct



What factor contributes to the bent shape of a water molecule? - ✔✔✔✔The unshared electron pairs
on the oxygen atom



Which diagrams correctly represent a hydrogen bond? - ✔✔✔✔A and D



The H+ concentration of a solution is 5.6 x 10-5 What is the pH? - ✔✔✔✔4.25



If the Ka of an acid is 7.45 x 10-10, what is the pKa? - ✔✔✔✔9.13



List the acids in INCREASING order of strength (weakest to strongest):