188) Based on the structure of its side chains, the amino acid shown below can be classified as
A) acidic.
B) basic.
C) neutral, non-polar.
D) neutral, polar.
189) Based on the structure of its side chains, the amino acid shown below can be classified as
A) acidic.
B) basic.
C) neutral, non-polar.
D) neutral, polar.
190) Based on the structure of its side chains, the amino acid shown below can be classified as
A) acidic.
B) basic.
C) neutral, non-polar.
D) neutral, polar.
191) Based on the structure of its side chains, the amino acid shown below can be classified as
A) acidic.
B) basic.
C) neutral, non-polar.
D) neutral, polar.
192) Identify the following dipeptide.
A) Ser-Ala
B) Ser-Leu
C) Ser-Phe
D) Ser-Val
193) Identify the following dipeptide.
A) Ser-Ala
B) Ser-Leu
C) Ser-Phe
D) Ser-Val
194) Identify the following amine base found in nucleic acids.
A) Adenine (A)
B) Cytosine (C)
C) Thymine (T)
D) Uracil (U)
195) Identify the following amine base found in nucleic acids.
A) Adenine (A)
B) Cytosine (C)
C) Thymine (T)
D) Uracil (U)
196) Identify the following amine base found in nucleic acids.
A) Adenine (A)
B) Cytosine (C)
C) Thymine (T)
D) Uracil (U)
197) Identify the following amine base found in nucleic acids.
A) Adenine (A)
B) Cytosine (C)
C) Thymine (T)
D) Uracil (U)
23.2 Algorithmic Questions
1) How many isomers are there for C4H10?
A) 2
B) 3
C) 4
D) 5
2) When butane, , reacts with oxygen to produce carbon dioxide and water, 2880 kJ of heat are
released per mole of methane. How many kJ of heat are released per gram of oxygen used?
A) 6.92 kJ/g
B) 13.8 kJ/g
C) 585 kJ/g
D) 1170 kJ/g
3) Which one of the following molecules is the most polar?
A) acetylene
B) benzoic acid
C) diethylether
D) 2, 3-dimethylhexane
4) What is an example of the proper number of bonds to carbon?
A) two double bonds
B) one double bond + one triple bond
C) three single bonds
D) five single bonds
5) Benzene has a formula of
A) C3H8.
B) C6H10.
C) C6H6.
D) C8H16.
6) Which one of the following compounds is an alcohol?
A) CH3OCH3
B) CH3COCH2CH3
C) (CH3)2CHOH
D) CH3CO2CH3
7) The compound that does not contain oxygen is
A) aldehyde.
B) ester.
C) amide.
D) aromatic.
8) Identify the compound that contains two oxygens.
A) aldehyde
B) alkyne
C) amine
D) carboxylic acid
9) Which compound is a ketone?
A) butanal
B) propanoic acid
C) 2-butanone
D) butane
10) Which of the following molecules is the most highly oxidized, in other words, the one with the most
number of C-O bonds?
A) acetaldehyde
B) ethanoic acid
C) dimethyl ether
D) ethylene
11) Which one of the following contains a polar carbonyl group, C=O?
A) a carboxylic acid
B) an alkyne
C) an amine
D) an alkane
12) Which of the following pairs have the most similar chemical properties?
A) alkynes and esters
B) alkenes and aromatics
C) amines and carboxylic acids
D) ketones and aldehydes
13) Identify the compound that is an ester.
A) propyl propanoate
B) 3-hexanone
C) ethanoic acid
D) dimethyl ether
14) Identify the compound that is an aldehyde.
A) ethyl pentanoate
B) butanal
C) dimethyl ether
D) 3-pentanone
15) Identify the amine.
A) CH3CH2COOCH3
B) CH3CH2CH=CHCH3
C) CH3CH2OH
D) CH3CH2H2
16) Identify the ether.
A) CH3CH2OCH3
B) CH3CH2CH=CH2
C) CH3CH2OH
D) CH3CH2NHCH3
17) Which compound contains a nitrogen and a C=O?
A) ether
B) amide
C) carboxylic acid
D) alkene
18) Which compound contains only carbons and hydrogens?
A) methyl ethanoate
B) acetylene
C) 2-butanone
D) ethyl amine
19) Identify the compound that contains a carbon-carbon double bond.
A) 2-pentyne
B) 1-pentene
C) methyl propanoate
D) methanol
20) Which compound is a saturated hydrocarbon?
A) benzene
B) cyclohexene
C) 2-methylpentane
D) propylene
21) Which compound is a saturated hydrocarbon?
A) benzene
B) cycloheptene
C) 2-methylhexane
D) butyne
22) What is the IUPAC name for the continuous carbon chain of C4H10?
A) butane
B) methane
C) butene
D) octyne
23) Which name is not correct?
A) 2, 2-dimethylbutane
B) 2, 3-dimethyloctane
C) 2, 6, 6-trimethylheptane
D) 2, 3, 3-trimethyloctane
24) None of the listed compounds contains a ring. Which could have one carbon-carbon double bond?
A) C9H20
B) C2H2
C) C3H6
D) All of these