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1

Practice MCAT

Test I

Ken Evans, M.Sc., M.D.

Charlene Bramwell, M.Ed.

Reviewed by

Rodney Doyle, Ph.D.

Peter Minns, Ph.D.

Copyright ã Ken Evans

N CH 2 O PO 3 H CH 3 OH CH O

Practice MCAT Test I

http://www.mcatprep.net MCATPrep.net™ 2005-2007, InstantDollarz Incorporated. All rights rese 2

Preface

Practice MCAT Test I is designed to be similar to an actual MCAT exam, b oth in content and in presentation. However, in an actual MCAT exam you will be given each te st booklet separately, and a table of contents is not provided. Explanatory answers to this practice test are available from the authors upon payment of the purchase price. We encourage you to study the answe rs, even for questions you have answered correctly. Completing the practice test and studying the answers will help you become familiar with the exam format and help you review and better understand the MCAT subject areas. Practice MCAT Test I is offered through the internet for two reasons:

1. there are no printing and shipping costs so the price can be set low; an

d

2. potential buyers can “test-drive" before purchasing.

Practice MCAT Test I is in accordance with the 2003 changes in the MCAT. Thank you for your interest in our publication and good luck on the MCAT.

Ken Evans

Charlene Bramwell

Cover: Structure of pyridoxal phosphate, which is a derivative of vitam in B 6 . Pyridoxal phosphate is a coenzyme involved in many reactions in the metabolism of proteins, carbohydrates, and lipids. A prominent example o f its role is in the transamination of amino acids.

Practice MCAT Test I

http://www.mcatprep.net To order the solutions to this practice test, please visit http://www.mc atprep.net ."#$%&#'()(!*+#,!-../011$$$2.3(4*#+,526#,! 3

Contents

Preface 2

Contents 3

Physical Sciences 4

Passage IElectrochemistry

Passage II Electricity

Passage III Hess"s Law

Independent Questions

Passage IV Electrophoresis

Passage V Standing Waves

Passage VI Solubility

Independent Questions

Passage VII Capacitors

Passage VIII Thermodynamics

Passage IX Refraction

Independent Questions

Verbal Reasoning 14

Writing Sample 30

Biological Sciences 31

Passage IConcentrations

Passage II Carbohydrates

Passage IIIGenetics

Independent Questions

Passage IVOrganic Synthesis

Passage V Kidneys

Passage VI Extraction

Passage VII Evolution

Independent Questions

Passage VIII Alkenes

Passage IX Embryology

Passage X Transamination of Amino Acids

Independent QuestionsPractice MCAT Test I

4

Physical Sciences

Time: 100 minutes

Questions: 1-77

Directions: Most questions in the Physical Sciences test are organized into groups, each preceded by a descriptive passage. After studying the passage, select the one best answer to each question. Some questions are not based on a descriptive passage. You should also select the one best answer to these independent questions. A periodic table is provided and you may consult it whenever you wish.

Practice MCAT Test I

5

IA IIA IIIA IVA VA VIAVII

AVIII A 1 H 1.02 He 4.0 3 Li 6.94 Be 9.05 B 10.86 C 12.07 N 14.08 O 16.09 F

17.010

Ne 20.2
11 Na

23.012

Mg

24.313

Al

27.014

Si

28.115

P

31.016

S

32.117

Cl

35.518

Ar 40.0
19 K

39.120

Ca

40.121

Sc

45.022

Ti

47.923

V

50.924

Cr

52.025

Mn

54.926

Fe

55.827

Co

58.928

Ni

58.729

Cu

63.530

Zn

65.431

Ga

69.732

Ge

72.633

As

74.934

Se

79.035

Br

79.936

Kr 83.8
37
Rb

85.538

Sr

87.639

Y

88.940

Zr

91.241

Nb

92.942

Mo

95.943

Tc

97.944

Ru 10145
Rh 10246
Pd 10647
Ag 10748
Cd 11249
In 11450
Sn 11851
Sb 12152
Te 12753
I 12654
Xe 131
55
Cs 13256
Ba

13757--

71
bel- ow72 Hf 17873
Ta 18074
W 18375
Re 18676
Os 19077
Ir 19278
Pt 19579
Au 19780
Hg 20081
Tl 20482
Pb 20783
Bi 20984
Po 20985
At 21086
Rn 222
87
Fr 22388
Ra

22689-

103
bel- ow104

Unq105

Unp106

Unh107

Uns108

Uno109

Une 57
La 13858
Ce 14059
Pr 14060
Nd 14461
Pm 14462
Sm 15063
Eu 15264
Gd 15765
Tb 15866
Dy 16267
Ho 16468
Er 16769
Tm 16870
Yb 17371
Lu 175
89
Ac 22790
Th 23291
Pa 23192
U 23893
Np 23794
Pu 24495
Am 24396
Cm 24797
Bk 24798
Cf 25199
Es

252100

Fm

257101

Md

258102

No

259103

Lr 262

Periodic Table of the Elements

Practice MCAT Test I

6Passage I

Below is a table showing some Standard State Reduction

Potentials.

Half reaction E (V)

F 2 + 2e

® 2F

2.87 Cl 2 + 2e

® 2Cl

1.36 Br 2 + 2e

® 2Br

1.09 Ag + e

® Ag 0.80

Fe 3+ + e

® Fe

2+ 0.77 Cu 2+ + 2e

® Cu 0.34

2H + 2e

® H

2 0.00 Pb 2+ + 2e

® Pb -0.13

Ni 2+ + 2e

® Ni -0.25

Zn 2+ + 2e

® Zn -0.76

Na + e

® Na -2.71

1.What should happen when a piece of copper is placed

in 1M HCl?

A.The copper is dissolved by the acid.

B.The copper is dissolved by the acid with the releaseof hydrogen gas.

C.The copper bursts into greenish flames.

D.Nothing happens.

2.What should happen when a piece of lead is placed in

1M HCl?

A.The lead is dissolved by the acid.

B.The lead begins to dissolve with the release ofhydrogen gas.

C.The lead bursts into flames.

D.Nothing happens.

3.How many voltaic cells with a voltage greater than 2Vcan be made using the standard half-cell reactionslisted?A.11

B.9 C.17 D.15

4.Suppose that the half-cell reaction Ni

2+ + 2e

® Ni is

assigned to have a potential of 0.00 V The standard reduction potential for the reduction of Br 2 would be?

A.1.34 V

B.0.84 V

C.1.09 V

D.1.25 V5.A voltaic cell is set up with F

2 /F as one half cell and Br 2 Br as the other. What is the voltage of the cell at standard state?

A.3.96 V

B.1.78 V

C.1.09 V

D.2.87 V

6.NaCl is melted in a beaker and electrolysis carried out.

What is the minimum potential difference required to separate sodium and chlorine?

A.-4.07 V

B.-1.36 V

C.1.36 V

D.4.07 V

7.If standard state oxidation potentials are used insteadof standard state reduction potentials and the halfreactions are listed in descending order, which one ofthe following would be true?A.the lead reaction would be above the silver reaction

B.the fluorine reaction would be above the chlorinereaction C.the iron reaction would be above the nickel reaction D.the hydrogen reaction would be below the copperreaction

Passage II

A student is provided with a variety of electrical components and asked to perform certain tasks.

8.She is provided with three 2 W resistors. How many

different total resistances can be produced if all the resistors must be used in a circuit? A.3 B.4 C.5 D.6

9.What are the minimum and maximum total resistancesproduced above?A.0.67 W and 3 W

B.1 W and 6 W

C.1.33 W and 6 W

D.0.67 W and 6 W

10.What is the total resistance of two 2 W resistors in parallel

connected to a third 2 W resistor in series? A.6 W B.1 W C.3 W

D.1.33 W

Practice MCAT Test I

711.The student connects three 2 mF capacitors in parallel.

What is the total capacitance?

A.0.67 mF

B.6 mF

C.1.5 mF

D.3 mF

12.The capacitors in parallel above are connected to a 6Vd.c. voltage supply. What is the current in the circuit?A.0 A

B.1 A

C.1,000,000 A

D.2 A

13.The capacitors in parallel above are connected to ana.c. voltage of frequency 1 MHz. What is theimpedance?A.1/(6p) W

B.1/(2p) W

C.1/(12p) W

D.1/(24p) W

14.The rms voltage of this circuit is 4 V. What is the rmscurrent?A.48p A

B.24p A

C.40p A

D.3p A

15.A 2 milliHenry inductor is connected to an a.c. voltageof frequency 1 MHz. What is the impedance?

A.2,000p W

B.4,000p W

C.400p W

D.40,000p W

quotesdbs_dbs21.pdfusesText_27

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