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MCAT Organic Chemistry Question — Alcohol Reactions

March 20, 2015

Considering all “-R” groups to be alkyl groups, which alcohol is most reactive in an SN1 reaction with HCl?

a) primary alcohol

b) secondary alcohol

c) tertiary alcohol

d) number of substituent groups does not affect alcohol reactivity

 

 

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MCAT Biology Question — Carbon Reactions

March 19, 2015

In the Felkin model, a carbon which is originally achiral can undergo a reaction to generate a single enantiomer with 98% yield (with the remaining 2% generating the opposite enantiomer). This type of reaction is best described as:

A) Chiral chromatography

B) Racemization

C) Asymmetric induction

D) Unimolecular elimination

 

 

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MCAT Biology – Germ Layers

March 18, 2015

The lining of the digestive tract and the respiratory tract develops from which germ layer?

I. Endoderm
II. Mesoderm
III. Ectoderm

a) I only

b) II only

c) III only

d) I and II

 

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MCAT Physics – Light Behavior

March 17, 2015

A ray of light traveling through air hits a pane of glass with known refractive index. What information is required in order to calculate the angle of refraction?

a) Planck’s constant and the speed of light

b) the specific gravity of the glass

c) the angle of incidence

d) the density of air and the density of glass

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MCAT Physics – Doppler Effect

March 16, 2015

Radar guns used to detect the speed of motorists relies on the principles of sound and Doppler effect. All of the following measurements may be utilized to calculate the relative velocity of a motor vehicle EXCEPT:

A.    Speed of sound in air
B.    Period of the wave emitted
C.    Density of the air
D.    Frequency of the waved detected

 

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MCAT Psychology – Correlation

March 13, 2015

In the course of gathering data in an experiment, a researcher develops the following correlation matrix:

Table 1 Correlation Matrix

correlation matrix

Which of the following pairs of variables are most strongly correlated?

A) A, C
B) A, D
C) B, D
D) C, D

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MCAT Physics – Sound Wave Behavior

March 12, 2015

 

A source emits a sound from one medium with a certain velocity, intensity, frequency and wavelength. When the sound exits the first medium and enters a denser medium, all of the following changes EXCEPT:

A.    velocity
B.    intensity
C.    frequency
D.    wavelength

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MCAT Chemistry – Electron States

March 11, 2015

chem electron states questions

 

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MCAT Psychology – Executive Function

March 10, 2015

As a result of substance abuse throughout adolescence, a young adult suffers from a number of psychological symptoms reflecting diminished executive functioning. Which of the following are likely true of this patient?

I. Pathological changes to the prefrontal cortex.
II. Increased susceptibility to auditory hallucinations.
III. Reduced behavioral impulse control.

A) I only
B) III only
C) I and III only
D) II and III only

 

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MCAT Chemistry – Conduction

March 9, 2015

A conducting material may be characterized by all of the following EXCEPT:

A. Flowing current
B. The conduction of electrons from one nucleus to another
C. Relatively low resistivity constants
D. Metallic materials such as copper and aluminum

 

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