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