Exam 3 Biol 133 Chapters 12-
15 study questions
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ [LATEST 2026-
2027] 100% GUARANTEED
PASS
If a DNA sample from an unknown organism has telomerase, the organism - CORRECT ANSWER-
is eukaryotic
An experiment started with 15N15N DNA. After two generations in 14N medium, E. coli will
have - CORRECT ANSWER-50% 15N14N and 50% 14N14N
What creates fragments on the lagging strand - CORRECT ANSWER-DNA polymerase III
Why do purines have to pair with a pyrimidine? - CORRECT ANSWER-The distance between the
two phophodiester backbones remain constant.
Some scientists have proposed that the earliest forms of life may have existed in an "RNA
World" where RNA was both the genetic material and responsible for enzymatic activity.
Imagine that you have reacreated such a life form. What would demmonstrate that RNA, but
not protein or DNA, is necessary and sufficient for these functions? - CORRECT ANSWER-The
organism lives and replicates despite protease and DNase treatment, but the organism dies
when treated with RNase.
, What is a major difference between DNA polymerase I and DNA polymerase III? - CORRECT
ANSWER--DNA polymerase I synthesizes DNA on leading strands and DNA polymerase III
synthesizes DNA on lagging strands -or-
-DNA polymerase I synthesizes DNA on lagging strands and DNA polymerase III synthesizes DNA
on leading strands.
A mutation causes a codon to change from UAC to UAU, both of which specity tyrosin. This is an
example of - CORRECT ANSWER-silent mutation
Frameshift mutations occur when - CORRECT ANSWER-bases are added or deleted
What is the correct order of DNA compaction in eukaryotes? - CORRECT ANSWER-Helix,
nucleosome, chromatin fiber, condensation of chromatin, duplicated chromosome
Elongation factors provide energy for translation by hydrolying what type of molecule? -
CORRECT ANSWER-GTP
What unusual feature does RNA polymerase II have in transcription termination? - CORRECT
ANSWER-Transcribes over 1,000 nucleotides at the end of the RNA that are cleaved off.
Are the following enzymes involved in DNA replication or transcription? - CORRECT ANSWER-
Replication-DNA polymerase
Transcription-RNA polymerase
Basal transcription factors recruit RNA polymerase which combine together to form the -
CORRECT ANSWER-Preinitiation complex
15 study questions
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ [LATEST 2026-
2027] 100% GUARANTEED
PASS
If a DNA sample from an unknown organism has telomerase, the organism - CORRECT ANSWER-
is eukaryotic
An experiment started with 15N15N DNA. After two generations in 14N medium, E. coli will
have - CORRECT ANSWER-50% 15N14N and 50% 14N14N
What creates fragments on the lagging strand - CORRECT ANSWER-DNA polymerase III
Why do purines have to pair with a pyrimidine? - CORRECT ANSWER-The distance between the
two phophodiester backbones remain constant.
Some scientists have proposed that the earliest forms of life may have existed in an "RNA
World" where RNA was both the genetic material and responsible for enzymatic activity.
Imagine that you have reacreated such a life form. What would demmonstrate that RNA, but
not protein or DNA, is necessary and sufficient for these functions? - CORRECT ANSWER-The
organism lives and replicates despite protease and DNase treatment, but the organism dies
when treated with RNase.
, What is a major difference between DNA polymerase I and DNA polymerase III? - CORRECT
ANSWER--DNA polymerase I synthesizes DNA on leading strands and DNA polymerase III
synthesizes DNA on lagging strands -or-
-DNA polymerase I synthesizes DNA on lagging strands and DNA polymerase III synthesizes DNA
on leading strands.
A mutation causes a codon to change from UAC to UAU, both of which specity tyrosin. This is an
example of - CORRECT ANSWER-silent mutation
Frameshift mutations occur when - CORRECT ANSWER-bases are added or deleted
What is the correct order of DNA compaction in eukaryotes? - CORRECT ANSWER-Helix,
nucleosome, chromatin fiber, condensation of chromatin, duplicated chromosome
Elongation factors provide energy for translation by hydrolying what type of molecule? -
CORRECT ANSWER-GTP
What unusual feature does RNA polymerase II have in transcription termination? - CORRECT
ANSWER-Transcribes over 1,000 nucleotides at the end of the RNA that are cleaved off.
Are the following enzymes involved in DNA replication or transcription? - CORRECT ANSWER-
Replication-DNA polymerase
Transcription-RNA polymerase
Basal transcription factors recruit RNA polymerase which combine together to form the -
CORRECT ANSWER-Preinitiation complex
