ECPI BIOLOGY 111 ACTUAL TEST BANK
COMPLETE QUESTIONS AND ANSWERS
GRADED A PLUS SUCCESS GUIDE
●● The AUC and AUA codons in mRNA both specify isoleucine. What
feature of the genetic code explains this?
Answer: degeneracy
●● Which of the following is found in RNA but NOT in DNA?
Answer: Uracil
●● Point mutation of the second place mutating "A" with "T" will result
in a similar if not the same amino acid. (Big chart)
Answer: False
●● Which of the following contains anticodons?
Answer: Transfer RNA
●● Which of the following types of mutations could result in a
frameshift mutation?
Answer: either an insertion or a deletion of a base
,●● Which of the following would block mature mRNA from being
translated into protein?
Answer: A substance that prevents the transfer of amino acids to the
growing polypeptide chain
●● Which of the following is a function of a poly-A tail in mRNA?
Answer: It helps protect the mRNA from degradation by cellular
enzymes.
●● Which of the following events in translation is the first to occur in
eukaryotes?
Answer: the small subunit of the ribosome recognizing and attaching to
the 5' cap of mRNA
●● How many consecutive mRNA bases are needed to specify an amino
acid?
Answer: 3
●● The binding of ________ is required for transcription to start.
Answer: RNA polymerase
●● What is the predicted size of the corresponding mature mRNA in
base pairs (bp), excluding the 5' cap and 3' poly-A tail? (green and blue
picture)
, Answer: 295 bp
●● In eukaryotes, what is the DNA wrapped around?
Answer: Histones
●● Post-translational control refers to:
Answer: regulation of gene expression after translation
●● In 1997, Dolly the sheep was cloned. Which of the following
processes was used?
Answer: Fusion of an adult cell's nucleus with an enucleated sheep egg,
followed by incubation in a surrogate
●● Bt toxin is considered to be _____.
Answer: an organic insecticide produced by bacteria
●● Why can bacteria (prokaryotic cells) start synthesizing proteins right
away without RNA processing, and eukaryotes have to wait?
Answer: They do not have a nucleus so ribosomes can translate the
mrna.
●● What is bioinformatics?
COMPLETE QUESTIONS AND ANSWERS
GRADED A PLUS SUCCESS GUIDE
●● The AUC and AUA codons in mRNA both specify isoleucine. What
feature of the genetic code explains this?
Answer: degeneracy
●● Which of the following is found in RNA but NOT in DNA?
Answer: Uracil
●● Point mutation of the second place mutating "A" with "T" will result
in a similar if not the same amino acid. (Big chart)
Answer: False
●● Which of the following contains anticodons?
Answer: Transfer RNA
●● Which of the following types of mutations could result in a
frameshift mutation?
Answer: either an insertion or a deletion of a base
,●● Which of the following would block mature mRNA from being
translated into protein?
Answer: A substance that prevents the transfer of amino acids to the
growing polypeptide chain
●● Which of the following is a function of a poly-A tail in mRNA?
Answer: It helps protect the mRNA from degradation by cellular
enzymes.
●● Which of the following events in translation is the first to occur in
eukaryotes?
Answer: the small subunit of the ribosome recognizing and attaching to
the 5' cap of mRNA
●● How many consecutive mRNA bases are needed to specify an amino
acid?
Answer: 3
●● The binding of ________ is required for transcription to start.
Answer: RNA polymerase
●● What is the predicted size of the corresponding mature mRNA in
base pairs (bp), excluding the 5' cap and 3' poly-A tail? (green and blue
picture)
, Answer: 295 bp
●● In eukaryotes, what is the DNA wrapped around?
Answer: Histones
●● Post-translational control refers to:
Answer: regulation of gene expression after translation
●● In 1997, Dolly the sheep was cloned. Which of the following
processes was used?
Answer: Fusion of an adult cell's nucleus with an enucleated sheep egg,
followed by incubation in a surrogate
●● Bt toxin is considered to be _____.
Answer: an organic insecticide produced by bacteria
●● Why can bacteria (prokaryotic cells) start synthesizing proteins right
away without RNA processing, and eukaryotes have to wait?
Answer: They do not have a nucleus so ribosomes can translate the
mrna.
●● What is bioinformatics?
