Comprehensive Questions with
Verified Answers Graded A+
What quantity of Compound 1 must be provided to prepare 100.00 mL of solution with a
concentration equal to Ki?
A.
48.4 mg
B.
24.2 mg
C.
5.64 mg
D.
2.92 mg - Answer: Answer: D
Dimensional Analysis conversion
If only [I] is increased, then [ESI] or [EI] increases. This is an example of:
A.
the Bose-Einstein Principle.
B.
the Heisenberg Uncertainty Principle.
C.
,the Le Châtelier's Principle.
D.
the Pauli Exclusion Principle. - Answer: Answer: C
A: A collection of atoms close to absolute zero will coalesce into a single quantum state.
B: Possible density for electrons. Not much context for this problem.
C: In this question, [I] <--> [ESI] <--> [EI]. Increasing [I] will shift the equilibrium to the right and
produce an increased concentration of [ESI] or [EI].
D: 2 electrons in each spin. Not much context for this problem.
Which structural change to Compound 1 would make it more water soluble?
A.
Replacing benzene CH with N in the ring
B.
Replacing C=O with C=CH2
C.
Replacing N-N=N with CH-CH=CH
D.
Replacing NH with NCH3 - Answer: Answer: A
Like dissolves like, water is a polar compound, so making Compound 1 more polar will allow it to
be more soluble in water.
A: more polar
B: more non-polar
C: More non- polar
D: more non-polar
,In μM•s-1 and μM, what should the approximate values of kcat/KM and Ki be, respectively,
when [I] = 180 μM?
A.
33.5 and 15.7
B.
75 and 30.1
C.
150 and 60.3
D.
300 and 120.6 - Answer: Answer: C
Based upon Table 1, for any [I] value, Ki is 60.3, and Km is within the range of .14-.15mM^-1 s^-
1
What functional group transformation occurs in the product of the reaction catalyzed by Na+-
NQR?
A.
RC(=O)R → RCH(OH)R
B.
ROPO32- → ROH + Pi
C.
RC(=O)NHR'→ RCOOH + R'NH2
D.
RC(=O)OR'→ RCOOH + R'OH - Answer: Answer: A
The passage states Na+-NQR is an enzyme which catalyzes the reaction oxidoreductase of
ubiquinone. Ubiquinone contains a ketone group and when reduced, contains an alcohol group.
, A: Ketone --> alcohol
B: Decomp reaction (not relevant)
C. Ketone --> carboxylic acid
D. Ketone --> carboxylic acid and alcohol
What is the chemical structure of a component found in four of the five cofactors used by Na+-
NQR? - Answer: Answer: B
The passage states the structure component found in 4 of the 5 cofactors used by Na+-NQR is
flavin. The structure of flavin is the following.
A. Adenine
B. Flavin
C. Ubiquinone
D. Histidine
What is the ratio of cation to enzyme in the spectroelectrochemical experiments described in
the passage?
A. 1:2
B. 2:1
C. 20:1
D. 200:1 - Answer: Answer: D
The passage states that the cation concentration is .15M and enzyme concentration is .75mM .
Convert the units to the most simplest and divide.