BSC 114 FINAL EXAM QUESTIONS
WITH 100% CORRECT ANSWERS
Which of the following correctly lists the processes in order for one cycle of polymerase
chain reaction (PCR)? - Answer-denature DNA; anneal primers; extend primers
A paleontologist has recovered a bit of tissue from the 400-year-old preserved skin of
an extinct dodo (a bird). To compare a specific region of the DNA from the sample with
DNA from living birds, which of the following would be most useful for increasing the
amount of dodo DNA available for testing? - Answer-gel electrophoresis
It is estimated the human genome contains approximately _____ genes. - Answer-
22,000
Transgenic organisms have modified - Answer-genetic makeup
Select the two enzymes needed to produce recombinant DNA. - Answer-ligase
restriction enzyme
Which of the following tools of DNA technology is incorrectly paired with its use? -
Answer-DNA ligase-cutting DNA, creating sticky ends of restriction fragments
What is the function of reverse transcriptase in retroviruses? - Answer-It converts host
cell RNA into viral DNA.
_____ can be used to treat bacterial infections, while ______ are used to help prevent
viral infections. - Answer-antibiotics, vaccines
Which of the following processes within viral replication is the greatest source of genetic
variation in RNA virus populations? - Answer-High mutation rate due to lack of
proofreading of RNA genome replication errors.
All viruses have ____ and ____ and some pick up a(n) ______ coded by the host. -
Answer-genetic material, a capsid, envelope
According to the punctuated equilibria model, ________. - Answer-most new species
accumulate their unique features relatively rapidly as they come into existence, then
change little for the rest of their duration as a species
, Which of the following processes best describes the cause of a bottleneck effect? -
Answer-chance events that change allele frequency
Two species of frogs belonging to the same genus occasionally mate, but the embryos
stop developing after a day and then die. Which of the following mechanisms keep the
species separate? - Answer-reduced hybrid fertility
Over time, humans have steadily increased their movements across the continents of
the Earth. Which of the following results has most likely been derived from these
movements? - Answer-increased gene flow
Which of the following processes can be effective in preventing the onset of viral
infection in humans? - Answer-getting vaccinated to certain viruses
Which of the following can be duplicated in a genome? - Answer-sequences,
chromosomes, or sets of chromosomes
Place the following genomes in order from smallest to largest based on the number of
genes they have (using the general rules we discussed in class). - Answer-hippo
butterfly
fungi
bacteria
virus
Which of the following best explains the presence of homologous genes in different
species? - Answer-the species descend from a common ancestor
Put the steps of the Lytic cycle in the correct order beginning when it finds its host cell. -
Answer-attachment
penetration
synthesis
self assembly
release
Which of the following events or characteristics is the most likely explanation for why an
individual experiences regular herpesvirus-mediated cold sore or genital sore flare-ups?
- Answer-Herpes is lysogenic and copies of the herpesvirus genome permanently
maintained in host nuclei are periodically "activated."
In 2009, a flu pandemic was believed to have originated when viral transmission
occurred from pig to human, thereby earning the designation "swine flu." How is this
possible? - Answer-The pig virus is zoonotic and was transferred to a human.
Genetic profiles are used to determine whether Sam could be the father of Becky's
baby. Sam is not the father if _____ genetic profile shows bands not present in ____
genetic profile. - Answer-the baby's, Sam's or Becky's
WITH 100% CORRECT ANSWERS
Which of the following correctly lists the processes in order for one cycle of polymerase
chain reaction (PCR)? - Answer-denature DNA; anneal primers; extend primers
A paleontologist has recovered a bit of tissue from the 400-year-old preserved skin of
an extinct dodo (a bird). To compare a specific region of the DNA from the sample with
DNA from living birds, which of the following would be most useful for increasing the
amount of dodo DNA available for testing? - Answer-gel electrophoresis
It is estimated the human genome contains approximately _____ genes. - Answer-
22,000
Transgenic organisms have modified - Answer-genetic makeup
Select the two enzymes needed to produce recombinant DNA. - Answer-ligase
restriction enzyme
Which of the following tools of DNA technology is incorrectly paired with its use? -
Answer-DNA ligase-cutting DNA, creating sticky ends of restriction fragments
What is the function of reverse transcriptase in retroviruses? - Answer-It converts host
cell RNA into viral DNA.
_____ can be used to treat bacterial infections, while ______ are used to help prevent
viral infections. - Answer-antibiotics, vaccines
Which of the following processes within viral replication is the greatest source of genetic
variation in RNA virus populations? - Answer-High mutation rate due to lack of
proofreading of RNA genome replication errors.
All viruses have ____ and ____ and some pick up a(n) ______ coded by the host. -
Answer-genetic material, a capsid, envelope
According to the punctuated equilibria model, ________. - Answer-most new species
accumulate their unique features relatively rapidly as they come into existence, then
change little for the rest of their duration as a species
, Which of the following processes best describes the cause of a bottleneck effect? -
Answer-chance events that change allele frequency
Two species of frogs belonging to the same genus occasionally mate, but the embryos
stop developing after a day and then die. Which of the following mechanisms keep the
species separate? - Answer-reduced hybrid fertility
Over time, humans have steadily increased their movements across the continents of
the Earth. Which of the following results has most likely been derived from these
movements? - Answer-increased gene flow
Which of the following processes can be effective in preventing the onset of viral
infection in humans? - Answer-getting vaccinated to certain viruses
Which of the following can be duplicated in a genome? - Answer-sequences,
chromosomes, or sets of chromosomes
Place the following genomes in order from smallest to largest based on the number of
genes they have (using the general rules we discussed in class). - Answer-hippo
butterfly
fungi
bacteria
virus
Which of the following best explains the presence of homologous genes in different
species? - Answer-the species descend from a common ancestor
Put the steps of the Lytic cycle in the correct order beginning when it finds its host cell. -
Answer-attachment
penetration
synthesis
self assembly
release
Which of the following events or characteristics is the most likely explanation for why an
individual experiences regular herpesvirus-mediated cold sore or genital sore flare-ups?
- Answer-Herpes is lysogenic and copies of the herpesvirus genome permanently
maintained in host nuclei are periodically "activated."
In 2009, a flu pandemic was believed to have originated when viral transmission
occurred from pig to human, thereby earning the designation "swine flu." How is this
possible? - Answer-The pig virus is zoonotic and was transferred to a human.
Genetic profiles are used to determine whether Sam could be the father of Becky's
baby. Sam is not the father if _____ genetic profile shows bands not present in ____
genetic profile. - Answer-the baby's, Sam's or Becky's
