CHEM 120, Final Exam Chamberlain college of Nursing,CHEM 120: Introduction to General, Organic & Biological Chemistry Set-2

CHEM 120 Final Exam

1. (TCO 4) The shape of a carbon dioxide molecule is _____.
(Points : 5)
tetrahedral
pyramidal
linear
triangular
None of the above

2. (TCO 4) Which of the following substances does not have polar
covalent bonds? (Points : 5)
CO2
CH3Cl
Cl2
NF3



3. (TCO 8) According to the Bronsted-Lowry definition, which
chemical in the following reaction is the acid?
NH3 + HNO3  NH4+ + NO3- (Points : 5)
NH4+
NH3
NO3-
HNO3
None of the above

4. (TCO 8) According to the Bronsted-Lowry definition, which
chemical in the following reaction is the base?
HNO2 + HS-  H2S + NO2- (Points : 5)
NO2
H2S
NO2-
HS-

, None of the above

5. (TCO 12) Which nucleic acid carries the amino acid that is
added onto the growing amino acid chain during translation?
(Points : 5)
DNA
tRNA
mRNA
rRNA
Thiamine

6. (TCO 12) Which of the following best describes the action of
enzymes in living systems? A specific enzyme generally catalyzes
(Points : 5)
one specific reaction.
a group of similar reactions.
many different reactions.
random reactions.
either one specific reaction or a group of similar reactions.


7. (TCO 12) Which of the following is not an unsaturated fatty
acid? (Points : 5)
CH3CH2CH2CH2CH2CH2CH=CHCOOH
CH3CH2CH2CH2CH=CHCH=CHCOOH
CH3CH2CH2CH2CH2CH2CH2COOH
CH3CH2CH2CH2CH2CH2CH2CH2CH=CHCOOH
CH3CH2CH2CH2CH=CHCH2CH=CHCOOH


8. (TCO 12) The secondary structure of a protein is determined by
(Points : 5)
the amino acid composition.
the order of amino acids in the protein.