Biology Exam 3: Campbell Biology
Replication in prokaryotes differs from replication in eukaryotes for which of the following
reasons? - Answer: Prokaryotic chromosomes have a single origin of replication, whereas
eukaryotic chromosomes have many.
What is meant by the description "antiparallel" regarding the strands that make up DNA? -
Answer: The 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other
strand.
In the polymerization of DNA, a phosphodiester bond is formed between a phosphate group of
the nucleotide being added and _________ of the last nucleotide in the polymer. - Answer: the
3' OH
Which of the following results from Griffith's experiment is an example of transformation? -
Answer: Mouse dies after being injected with a mixture of heat-killed S and living R cells.
In DNA from any species, the amount of adenine equals the amount of thymine, and the
amount of guanine equals the amount of cytosine.-Which of the scientist was responsible for
this discovery? - Answer: Erwin Chargaff
In E. coli, which enzyme catalyzes the elongation of a new DNA strand in the 5' → 3' direction? -
Answer: DNA polymerase III
Which of the following helps to hold the DNA strands apart while they are being replicated? -
Answer: single-strand DNA binding proteins
What is the role of DNA ligase in the elongation of the lagging strand during DNA replication? -
Answer: It joins Okazaki fragments together.
Heterochromatin is _________, whereas euchromatin is _________. - Answer: highly
condensed, less compact
, Biology Exam 3: Campbell Biology
In the process of transcription, __________. - Answer: RNA is synthesized
Codons are part of the __________. - Answer: mRNA
A signal peptide __________. - Answer: helps target a protein to the ER
A particular triplet of bases in the template strand of DNA is 5' AGT 3'. The corresponding codon
for the mRNA transcribed is __________. - Answer: 3' UCA 5'
The first event to take place in translation in eukaryotes is - Answer: the small subunit of the
ribosome recognizes and attaches to the cap of mRNA.
Once researchers identified DNA as the unit of inheritance, they asked how information was
transferred from the DNA in the nucleus to the site of protein synthesis in the cytoplasm. What
is the mechanism of information transfer in eukaryotes? - Answer: Messenger RNA is
transcribed from a single gene and transfers information from the DNA in the nucleus to the
cytoplasm, where protein synthesis takes place.
__________carries an amino acid to a strand of mRNA. - Answer: tRNA
__________ are noncoding segments of mRNA, and __________ are segments that code for
functional products. - Answer: Introns, exons
In certain plants, tall is dominant to short. If a heterozygous plant is crossed with a homozygous
tall plant, what is the probability that the offspring will be short? - Answer: 0
At which phase is it preferable to obtain chromosomes to prepare a karyotype? - Answer: Late
prophase or metaphase
Replication in prokaryotes differs from replication in eukaryotes for which of the following
reasons? - Answer: Prokaryotic chromosomes have a single origin of replication, whereas
eukaryotic chromosomes have many.
What is meant by the description "antiparallel" regarding the strands that make up DNA? -
Answer: The 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other
strand.
In the polymerization of DNA, a phosphodiester bond is formed between a phosphate group of
the nucleotide being added and _________ of the last nucleotide in the polymer. - Answer: the
3' OH
Which of the following results from Griffith's experiment is an example of transformation? -
Answer: Mouse dies after being injected with a mixture of heat-killed S and living R cells.
In DNA from any species, the amount of adenine equals the amount of thymine, and the
amount of guanine equals the amount of cytosine.-Which of the scientist was responsible for
this discovery? - Answer: Erwin Chargaff
In E. coli, which enzyme catalyzes the elongation of a new DNA strand in the 5' → 3' direction? -
Answer: DNA polymerase III
Which of the following helps to hold the DNA strands apart while they are being replicated? -
Answer: single-strand DNA binding proteins
What is the role of DNA ligase in the elongation of the lagging strand during DNA replication? -
Answer: It joins Okazaki fragments together.
Heterochromatin is _________, whereas euchromatin is _________. - Answer: highly
condensed, less compact
, Biology Exam 3: Campbell Biology
In the process of transcription, __________. - Answer: RNA is synthesized
Codons are part of the __________. - Answer: mRNA
A signal peptide __________. - Answer: helps target a protein to the ER
A particular triplet of bases in the template strand of DNA is 5' AGT 3'. The corresponding codon
for the mRNA transcribed is __________. - Answer: 3' UCA 5'
The first event to take place in translation in eukaryotes is - Answer: the small subunit of the
ribosome recognizes and attaches to the cap of mRNA.
Once researchers identified DNA as the unit of inheritance, they asked how information was
transferred from the DNA in the nucleus to the site of protein synthesis in the cytoplasm. What
is the mechanism of information transfer in eukaryotes? - Answer: Messenger RNA is
transcribed from a single gene and transfers information from the DNA in the nucleus to the
cytoplasm, where protein synthesis takes place.
__________carries an amino acid to a strand of mRNA. - Answer: tRNA
__________ are noncoding segments of mRNA, and __________ are segments that code for
functional products. - Answer: Introns, exons
In certain plants, tall is dominant to short. If a heterozygous plant is crossed with a homozygous
tall plant, what is the probability that the offspring will be short? - Answer: 0
At which phase is it preferable to obtain chromosomes to prepare a karyotype? - Answer: Late
prophase or metaphase
