BIO 200 Exam 2 Questions and
Answers
Where did the DNA polymerase attach to the DNA?
a. A
b. B
c. C
d. D
e. E - ANSWER-c. C
Which of the following nucleotides is found in RNA, but not DNA?
a. G
b. T
c. C
d. U
e. A - ANSWER-d. U
In terms of DNA, what is the complement to CAT?
a. GTA
b. TGC
c. ACG
d. GUA
e. DOG - ANSWER-a. GTA
In terms of RNA, what is the complement to CAT?
a. GTA
b. TGC
c. ACG
d. GUA
e. DOG - ANSWER-d. GUA
What amino acid does the codon "AGC" specify?
a. Leucine
b. Arginine
c. Serine
d. Isoleucine
e. STOP - ANSWER-c. Serine
What is the anticodon for the tRNA that pairs up with "AGC"? a. AGC
b. AUC
c. TCG
d. CGA
e. UCG - ANSWER-e. UCG
, What polypeptide would be produced from the following mRNA: 5'-
ACCGUAUGGCCCGGUACCAUGCCUAAC-3'
a. Met-Ala-Arg-Tyr-His-Ala
b. Thr-Val-Try-Pro-Gly-Thr-Met-Pro-Asp
c. Thr-Val-Try-Pro-Arg-Tyr-His-Ala
d. Gln-Ser-Val-Pro-Try-Pro-Gly-Met-Pro
e. I have no idea! (May be true, but this is not the correct answer.) - ANSWER-a.
Met-Ala-Arg-Tyr-His-Ala
Transcription occurs in the:
a. Cytoplasm
b. Nucleus
c. Mitochondrion
d. Ribosome
e. Matrix - ANSWER-b. Nucleus
Nucleotides are attracted to their complements by __________________ bonds,
which occur at their _______________.
a. Covalent bonds; Sugar rings
b. Hydrogen bonds; Nitrogenous bases
c. Ionic bonds; Nitrogenous bases
d. Hydrogen bonds; Phosphate groups
e. Ionic bonds; Phosphate groups - ANSWER-b. Hydrogen bonds; Nitrogenous
bases
Why does DNA replication only proceed in the 5' to 3' direction?
a. Because A only binds to T
b. Because DNA polymerase only recognizes the 3' end
c. Because DNA polymerase only recognizes the 5' end
d. Because DNA replication is semi-conservative
e. Because DNA has no -OH group on the 3' carbon - ANSWER-b. Because DNA
polymerase only recognizes the 3' end
Which two functional groups are involved in joining amino acids together?
a. Phosphate and Hydroxyl
b. Amino and Methyl
c. Methyl and Hydroxyl
d. Carboxyl and Hydroxyl
e. Amino and Carboxyl - ANSWER-e. Amino and Carboxyl
Where does translation take place?
a. Nucleus
b. Mitochondrion
c. Cell membrane
d. Ribosome
e. Golgi apparatus - ANSWER-d. Ribosome
How many different tRNAs are there?
a. 20
Answers
Where did the DNA polymerase attach to the DNA?
a. A
b. B
c. C
d. D
e. E - ANSWER-c. C
Which of the following nucleotides is found in RNA, but not DNA?
a. G
b. T
c. C
d. U
e. A - ANSWER-d. U
In terms of DNA, what is the complement to CAT?
a. GTA
b. TGC
c. ACG
d. GUA
e. DOG - ANSWER-a. GTA
In terms of RNA, what is the complement to CAT?
a. GTA
b. TGC
c. ACG
d. GUA
e. DOG - ANSWER-d. GUA
What amino acid does the codon "AGC" specify?
a. Leucine
b. Arginine
c. Serine
d. Isoleucine
e. STOP - ANSWER-c. Serine
What is the anticodon for the tRNA that pairs up with "AGC"? a. AGC
b. AUC
c. TCG
d. CGA
e. UCG - ANSWER-e. UCG
, What polypeptide would be produced from the following mRNA: 5'-
ACCGUAUGGCCCGGUACCAUGCCUAAC-3'
a. Met-Ala-Arg-Tyr-His-Ala
b. Thr-Val-Try-Pro-Gly-Thr-Met-Pro-Asp
c. Thr-Val-Try-Pro-Arg-Tyr-His-Ala
d. Gln-Ser-Val-Pro-Try-Pro-Gly-Met-Pro
e. I have no idea! (May be true, but this is not the correct answer.) - ANSWER-a.
Met-Ala-Arg-Tyr-His-Ala
Transcription occurs in the:
a. Cytoplasm
b. Nucleus
c. Mitochondrion
d. Ribosome
e. Matrix - ANSWER-b. Nucleus
Nucleotides are attracted to their complements by __________________ bonds,
which occur at their _______________.
a. Covalent bonds; Sugar rings
b. Hydrogen bonds; Nitrogenous bases
c. Ionic bonds; Nitrogenous bases
d. Hydrogen bonds; Phosphate groups
e. Ionic bonds; Phosphate groups - ANSWER-b. Hydrogen bonds; Nitrogenous
bases
Why does DNA replication only proceed in the 5' to 3' direction?
a. Because A only binds to T
b. Because DNA polymerase only recognizes the 3' end
c. Because DNA polymerase only recognizes the 5' end
d. Because DNA replication is semi-conservative
e. Because DNA has no -OH group on the 3' carbon - ANSWER-b. Because DNA
polymerase only recognizes the 3' end
Which two functional groups are involved in joining amino acids together?
a. Phosphate and Hydroxyl
b. Amino and Methyl
c. Methyl and Hydroxyl
d. Carboxyl and Hydroxyl
e. Amino and Carboxyl - ANSWER-e. Amino and Carboxyl
Where does translation take place?
a. Nucleus
b. Mitochondrion
c. Cell membrane
d. Ribosome
e. Golgi apparatus - ANSWER-d. Ribosome
How many different tRNAs are there?
a. 20
