Question and answers chemistry exam

Question 1 (2 points)

 Saved

What are the small packets that store neurotransmitters?

Question 1 options:

A) 

Synapses

B) 

Vesicles

C) 

Axons

D) 

Dendrites

Question 2 (2 points)

 Saved

What is the product of the reduction of an aldehyde?

Question 2 options:

A) 

A tertiary alcohol

B) 

A carboxylic acid

C) 

A primary alcohol

D) 

An ether

E) 

A secondary alcohol

Question 3 (2 points)

 Saved

Which compound has the highest boiling point?

Question 3 options:

A) 

CH3(CH2)6CH3

B) 

(CH3)2CHCH2CH2CH2CH2OH

C) 

CH3CH2CH2CH2CH2CH2CH2NH2

D) 

(CH3)2CHCH2COOCH3

E) 

All of the compounds have the same boiling point.

Question 4 (2 points)

 Saved

Which name is possible for a carboxylic acid?

Question 4 options:

A) 

m-butylbenzoic acid

B) 

6,6-dimethylhexanoic acid

C) 

1-chloropentanoic acid

D) 

2-pentylbutanoic acid

Question 5 (2 points)

 Saved

What is the product of the reduction of a ketone?

Question 5 options:

A) 

A primary alcohol

B) 

A tertiary alcohol

C) 

An ether

D) 

A carboxylic acid

E) 

A secondary alcohol

Question 6 (2 points)

 Saved

The compound decanal contributes to the odor and flavor of an orange. Which of the statements concerning the structure of decanal is incorrect?

Question 6 options:

A) 

Decanal is an aromatic compound.

B) 

Decanal is an aldehyde.

C) 

Decanal contains a saturated chain of ten carbons.

D) 

Decanal contains a carbonyl group on the first carbon of the carbon chain.

Question 7 (2 points)

 Saved

Heating a carboxylic acid with a primary amine forms water along with what organic product?

Question 7 options:

A) 

A secondary amide

B) 

A tertiary amide

C) 

An ester

D) 

A primary amide

Question 8 (2 points)

 Saved

The compound butanone does not need a number to specify the location of the carbonyl group on the carbon chain. Which statement best explains why?

Question 8 options:

A) 

The C=O can only be on C-2 of the carbon chain in this compound.

B) 

The C=O is assumed to be on C-1 of the carbon chain if it is not specified.

C) 

The location of the C=O does not need to be specified for a cyclic ketone.

D) 

The C=O is on an end carbon of the carbon chain.

Question 9 (2 points)

 Saved

When heated up with propanoic acid, which nitrogen-containing compound would NOT result in the formation of an amide?

Question 9 options:

A) 

Triethylamine

B) 

Ammonia

C) 

Dibutylamine

D) 

Aniline

Question 10 (2 points)

 Saved

Which is not a neurotransmitter?

Question 10 options:

A) 

Acetylcholine

B) 

Serotonin

C) 

Norepinephrine

D) 

Dopamine

E) 

Tryptophan

Question 11 (2 points)

 Saved

Which of the following represents the general condensed formula for an aldehyde?

Question 11 options:

A) 

RCOR

B) 

RCHO

C) 

RCH2OH

D) 

RCOOH

E) 

RCOH

Question 12 (2 points)

 Saved

What product is formed when tripropylamine is treated with acetic acid?

Question 12 options:

A) 

Acetamide

B) 

Tripropylammonium acetate

C) 

Tripropylamide

D) 

Tripropylammonia acetate

Question 13 (2 points)

 Saved

Which compound has the greatest solubility in water?

Question 13 options:

A) 

CH3(CH2)5CHO

B) 

CH3CH2CHO

C) 

CH3(CH2)4COCH2CH3

D) 

The compounds all are equally soluble in water.

Question 14 (2 points)

 Saved

Which reagent can be used to reduce a ketone?

Question 14 options:

A) 

H2SO4

B) 

H2 with Pd metal

C) 

Ag2O in aqueous NH4OH

D) 

K2Cr2O7

Question 15 (2 points)

 Saved

What is the name of the class of compounds with the general formula of R4N+ X–?

Question 15 options:

A) 

Quaternary ammonium salts

B) 

Tetraammonium salts

C) 

Tertiary ammonia salts

D) 

Tertiary ammonium salts

Question 16 (2 points)

 Saved

Which amide has the lowest boiling point?

Question 16 options:

A) 

CH3CH2CON(CH2CH3)2

B) 

CH3CH2CH2CH2CONHCH2CH3

C) 

CH3(CH2)5CONH2

D) 

All of the amides have the same boiling point.

Question 17 (2 points)

 Saved

Which statement is not true?

Question 17 options:

A) 

Norepinephrine and dopamine are both synthesized from the amino acid tyrosine.

B) 

Norepinephrine, dopamine, and serotonin are important neurotransmitters.

C) 

Once a chemical message is delivered, the neurotransmitter is degraded or returned to the presynaptic neuron to begin the process again.

D) 

All neurotransmitters are quaternary ammonium ions.

Question 18 (2 points)

 Saved

In the correct order, what are the three reactions that convert all-trans-retinal into 11-cis-retinal so that the process of vision can continue?

Question 18 options:

A) 

Reduction, Isomerization, Oxidation

B) 

Oxidation, Reduction, Isomerization

C) 

Oxidation, Isomerization, Reduction

D) 

Reduction, Oxidation, Isomerization

Question 19 (2 points)

 Saved

Which does not occur as a result of the release of epinephrine?

Question 19 options:

A) 

A decrease in glucose synthesis

B) 

An increase in blood pressure

C) 

An increase in heart rate

D) 

Dilation of lung passages

Question 20 (2 points)

 Saved

The Tollens reagent is which of the following?

Question 20 options:

A) 

K2Cr2O7

B) 

Ag2O in aqueous NH4OH

C) 

Cl2

D) 

H2SO4

Question 21 (2 points)

 Saved

Which compound has the highest boiling point?

Question 21 options:

A) 

CH3(CH2)5CH3

B) 

CH3(CH2)4CH2OH

C) 

CH3(CH2)4CHO

D) 

All of the compounds have the same boiling point.

Question 22 (2 points)

 Saved

Which of the following is not a valid statement about the compound 4-nonanamine?

Question 22 options:

A) 

It is a nitrogen-containing compound.

B) 

It is a primary amine.

C) 

It contains a carbonyl group on the fourth carbon of a nine carbon saturated chain.

D) 

It is largely nonpolar, and is insoluble in water.

Question 23 (2 points)

 Saved

In what way may drugs be used to affect neurotransmitters?

Question 23 options:

A) 

A drug may prevent the release of a neurotransmitter.

B) 

A drug may increase the amount of neurotransmitter released.

C) 

A drug may prevent the binding of a neurotransmitter to a receptor.

D) 

A drug may affect the degradation of a neurotransmitter.

E) 

Drugs may affect neurotransmitters using all of the mechanisms listed.

Question 24 (2 points)

 Saved

Which carboxylic acid is responsible for the sting of some types of ants?

Question 24 options:

A) 

Acetic acid (CH3CO2H)

B) 

Hexanoic acid (CH3(CH2)4COOH)

C) 

Formic acid (HCO2H)

D) 

Propanoic acid (CH3CH2COOH)

Question 25 (2 points)

 Saved

Which compound is soluble in heptane, but not soluble in water?

Question 25 options:

A) 

CH3COCH3

B) 

CH3CH2CHO

C) 

(CH3)2CH(CH2)5CHO

D) 

All of the compounds are soluble in both heptane and water.

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