We have sent an email with your new password.


Bch211 - Exam 2

46 Questions  I  By Grj2010
BCH211 - Exam 2
Study for final

  
Changes are done, please start the quiz.


Question Excerpt

Removing question excerpt is a premium feature

Upgrade and get a lot more done!
1.  If an inhibitor changes the slope of the Lineweaver-Burk graph, but not the x-intercept, it is this type of inhibition:
A.
B.
C.
D.
E.
2.  Sugars which contain an aldehyde group that can be oxidized are called
A.
B.
C.
D.
3.  Which of the following is a disaccharide?
A.
B.
C.
D.
4.  The synthesis of an enzyme in response to a cellular need is called
A.
B.
C.
D.
5.  The theory that proposes a somewhat flexible enzyme conformation is the 
A.
B.
C.
D.
6.  Which of the following enzyme properties is explained by the lock-and-key model?
A.
B.
C.
D.
7.  Structurally, glycogen is most similar to 
A.
B.
C.
D.
8.  True or false:  Enzymes, being proteins, are sensitive to temperature and will be denatured by high temperatures.
A.
B.
9.  Which of the following terms is a general definition of an enzyme?
A.
B.
C.
D.
10. 
  1. Lineweaver Burke - If everything else has a higher slope, anything lower than it represents the activation space.  everything above it represents the inhibition space
Gibbs free energy  delta G(negative - ) = spontaneous delta G(positive +) = nonspontaneous
A.
B.
C.
D.
11.  Which of the following is correctly called a complex carbohydrate?
A.
B.
C.
D.
12.  The simplest carbohydrates are called
A.
B.
C.
D.
13.  21000 molecules were acted on by a single molecule of an enzyme in 15 minutes.  What is the turnover number?
A.
B.
C.
D.
14.  A Lineweaver-Burk plot is useful in the analysis of enzymatic reactions because
A.
B.
C.
D.
15.  The value of Vmax changes in 
A.
B.
C.
D.
16.  The cyclic form of glucose results from the formation of
A.
B.
C.
D.
17.  The region of an enzyme where the substrate molecule fits is called the
A.
B.
C.
D.
18.  A polysaccharide containing B(14) linkages is
A.
B.
C.
D.
19.  True or false:  Aspirin acts as an reversible inhibitor of the COX 2 enzyme
A.
B.
20.  Which of the following inhibitors binds to the enzyme at a site other than the active site?
A.
B.
C.
D.
E.
21.  Competitive inhibitors have this effect:
A.
B.
C.
D.
E.
22.  The following structure is shown in 
A.
B.
C.
D.
23.  Draw the structure of B-D-Lactose in the Hawarth projection
A.
B.
C.
D.
24.  What happens to the entropy when ATP is hydrolyzed to ADP?
A.
B.
C.
D.
25.  Which of the following is true of a noncompetitive inhibitor?
A.
B.
C.
D.
26.  The structure given below has what type of glycosidic linkage?
A.
B.
C.
D.
27.  A metal ion required for enzyme activity is called
A.
B.
C.
D.
28.  The following compounds are enantiomers of each other
A.
B.
C.
D.
29.  Under saturation conditions, an enzyme-catalyzed reaction had a velocity V.  Which of the following would increase the rate of the reaction?
A.
B.
C.
D.
30.  The conditions required for maximum enzyme function are called:
A.
B.
C.
D.
31.  A short description of a diastereomer would be?
A.
B.
C.
D.
32.  Which statement about enzymes is incorrect?
A.
B.
C.
D.
33.  The following represents the results of an experiment on a metabolic enzyme.  What is the optimum pH of this enzyme?
A.
B.
C.
D.
34.  The structure below is shown in what anomeric form?
A.
B.
C.
D.
35.  Which of the following terms can be used correctly to fill the blank in the following equation?  
A.
B.
C.
D.
36.  A monosaccharide used to form nucleic acids is
A.
B.
C.
D.
37.  In the induced-fit model of substrate binding to enzymes
A.
B.
C.
D.
38.  Reactions requiring energy often occur with the simultaneous hydrolysis of
A.
B.
C.
D.
39.  The sign of Gibb's Free Energy is positive ("+") when energy is released
A.
B.
40.  True or false:  Energy is generally consumed during anabolism
A.
B.
41.  If the reaction AB has G = +15 Joule/mol and the reaction BC has G = -25 Joule/mol, the overall energy change AC will be  
A.
B.
C.
D.
E.
42.  If the y-intercept of a Lineweaver-Burk plot = 1.91 (sec/millimole) and the slope = 75.3L/sec, Km equals:
A.
B.
C.
D.
E.
43.  Refer to Exhibit 6A.  "Hindrate" is an inhibitor of triose phosphate isomerase.  When it is added to cells at a concentration of 0.1 nM, the enzyme's Km for the substrate is unchanged, but the apparent Vmax is altered to 50nM/sec. 
A.
B.
C.
D.
44.  Which form of monosaccharides is preferred by human cells?
A.
B.
C.
D.
45.  The carbohydrate below may be classified as
A.
B.
C.
D.
46.  Which of the following is a common function of many vitamins in the body?
A.
B.
C.
D.
Back to top

Removing ad is a premium feature

Upgrade and get a lot more done!
Take Another Quiz