BIO 340 EXAM QUESTIONS AND ANSWERS
WITH VERIFIED SOLUTIONS 100% CORRECT
"S" means what? - correct answer- Svedberg unit; equals to
a sedimentation coefficient if 10-13 seconds
3 classes of RNA polymerases in eukaryotes - correct answer-
Pol I, Pol II, and Pol III
30S subunit - correct answer- Contains 16S RNA, small
subunit
50S subunit - correct answer- Contains 28S and 5S RNA,
large subunit
A codón is a three base sequence of
1. mRNA that encodes for an amino acid
2. rRNA that encodes for an amino acid
3. tRNA that encodes for an amino acid
4. mRNA or tRNA that codes for an amino acid - correct answer-
mRNA that encodes for an amino acid
,a complex of proteins and small nuclear RNAs that form discrete
particles to mediate splicing is a
A. Holoenzyme
B. Spliceosome
C. Nucleosome
D. Ribosome - correct answer- Spliceosome
A example of an untranslated region (UTR)? - correct answer-
Promoter regions because they are not translated
A prokaryotic large ribosomal subunit is composed of
A. tRNA and protein
B. mRNA and protein
C. rRNA and protein
D. Only folded protein
E. Only folded RNA - correct answer- rRNA and protein
A ribosome contains - correct answer- Two subunits: one
large and one small
,A ribosome has how many binding sites? - correct answer- 3
with different functions; donor(P) site, acceptor(A) site, and
Exit(E) site
A tRNA in the P site of the ribosome will enter the ________ site
after translocation of the ribosome.
A. E
B. A
C. 3'
D. 5' - correct answer- E site
AAA —> AGÁ
Lys —> Arg
What kind of mutation is this?
Frameshift, nonsense, silent, Missense? - correct answer-
Missense
AAA —> TAA
Lys —> stop
What kind of mutation is this?
, Frameshift, nonsense, silent, Missense? - correct answer-
Nonsense
AAG ACT CCT —> AAG AAC TCC T
AAG ACT CCT —> AAG CTC CT
What kind of mutation is this?
Frameshift, nonsense, silent, Missense? - correct answer-
Frameshift
AGG —> CGG
Arg —> Arg
What kind of mutation is this?
Frameshift, nonsense, silent, Missense? - correct answer-
Silent
Alkylating agents - correct answer- donate an alkyl group
(CH3 or CH3CH3) to amino or keto groups in nucleotides to alter
base-pairing affinity, and transition mutations result
Example: mustard gas, ethyl methanesulfonate (EMS)
Alkylating agents generally result in which of the following types
of mutation?
WITH VERIFIED SOLUTIONS 100% CORRECT
"S" means what? - correct answer- Svedberg unit; equals to
a sedimentation coefficient if 10-13 seconds
3 classes of RNA polymerases in eukaryotes - correct answer-
Pol I, Pol II, and Pol III
30S subunit - correct answer- Contains 16S RNA, small
subunit
50S subunit - correct answer- Contains 28S and 5S RNA,
large subunit
A codón is a three base sequence of
1. mRNA that encodes for an amino acid
2. rRNA that encodes for an amino acid
3. tRNA that encodes for an amino acid
4. mRNA or tRNA that codes for an amino acid - correct answer-
mRNA that encodes for an amino acid
,a complex of proteins and small nuclear RNAs that form discrete
particles to mediate splicing is a
A. Holoenzyme
B. Spliceosome
C. Nucleosome
D. Ribosome - correct answer- Spliceosome
A example of an untranslated region (UTR)? - correct answer-
Promoter regions because they are not translated
A prokaryotic large ribosomal subunit is composed of
A. tRNA and protein
B. mRNA and protein
C. rRNA and protein
D. Only folded protein
E. Only folded RNA - correct answer- rRNA and protein
A ribosome contains - correct answer- Two subunits: one
large and one small
,A ribosome has how many binding sites? - correct answer- 3
with different functions; donor(P) site, acceptor(A) site, and
Exit(E) site
A tRNA in the P site of the ribosome will enter the ________ site
after translocation of the ribosome.
A. E
B. A
C. 3'
D. 5' - correct answer- E site
AAA —> AGÁ
Lys —> Arg
What kind of mutation is this?
Frameshift, nonsense, silent, Missense? - correct answer-
Missense
AAA —> TAA
Lys —> stop
What kind of mutation is this?
, Frameshift, nonsense, silent, Missense? - correct answer-
Nonsense
AAG ACT CCT —> AAG AAC TCC T
AAG ACT CCT —> AAG CTC CT
What kind of mutation is this?
Frameshift, nonsense, silent, Missense? - correct answer-
Frameshift
AGG —> CGG
Arg —> Arg
What kind of mutation is this?
Frameshift, nonsense, silent, Missense? - correct answer-
Silent
Alkylating agents - correct answer- donate an alkyl group
(CH3 or CH3CH3) to amino or keto groups in nucleotides to alter
base-pairing affinity, and transition mutations result
Example: mustard gas, ethyl methanesulfonate (EMS)
Alkylating agents generally result in which of the following types
of mutation?
