BIOTECHNOLOGY TEST AND ITS
ANSWERS. GOOD FOR EXAM REVISION
asexual reproduction.
In the controversial scientific process of cloning,
organisms are created that are genetically identical to the
parent. This process would be classified as
restriction
Which enzymes are used by genetic engineers to cut the
circular chromosome of bacteria into smaller segments?
time and money
A gnat-sized insect known as the Asian citrus psyllid has
been spreading a deadly plant disease, huanglongbing,
through America's citrus groves. Early attempts to contain
the disease have failed, and it has become a major threat
to the U.S. citrus industry. Huanglongbing is caused by
bacteria, Candidatus liberibacter, which the Asian citrus
psyllids carry in their salivary glands. The bacteria infiltrate
plants' circulatory systems, which then results in
blockages that stop the flow of nutrients from leaves to
roots. To slow huanglongbing, scientists have imported
wasps from Asia to prey on the psyllids, but they do not
know how introducing yet another species might impact
the fruit-growing habitats. The best long-term solution may
be genetic modification, which faces a long and costly
road to regulatory approval and public acceptance. In this
case, citrus trees would be genetically altered to resist the
attack of the psylids.
, What is a noted negative in using genetic engineering to
solve this problem of the psylids damage to U. S. citrus
crops?
Researchers could use embryonic stem cells to find
the cure to many disorders and illnesses.
Stem cell research is an emotional topic. Although the
advancements in research are remarkable, a portion of
society voices ethical reservations concerning the
research. Which statement would NOT be used by people
with these reservations?
Release of genetically-engineered organisms into the
environment with unpredictable results.
Genetically modified grass varieties that carry genes for
disease and drought resistance are now available. They
were produced by recombinant DNA technology.
However, the government has still not approved the sale
of most of them, due to cautionary factors. What is the
main reason for this concern?
More African elephants today naturally lack tusks
compared to the elephant populations 100 years ago,
because big game hunters sought elephants for ivory.
What situation is an example of artifical selection?
The diagram shows the incorporation of a virus
containing a healthy gene for insulin, into the
pancreas cell of a diabetic. This procedure is known
as __________.
The diagram shows the incorporation of a virus containing
a healthy gene for insulin, into the pancreas cell of a
diabetic. This procedure is known as __________.
inadequate technology.
ANSWERS. GOOD FOR EXAM REVISION
asexual reproduction.
In the controversial scientific process of cloning,
organisms are created that are genetically identical to the
parent. This process would be classified as
restriction
Which enzymes are used by genetic engineers to cut the
circular chromosome of bacteria into smaller segments?
time and money
A gnat-sized insect known as the Asian citrus psyllid has
been spreading a deadly plant disease, huanglongbing,
through America's citrus groves. Early attempts to contain
the disease have failed, and it has become a major threat
to the U.S. citrus industry. Huanglongbing is caused by
bacteria, Candidatus liberibacter, which the Asian citrus
psyllids carry in their salivary glands. The bacteria infiltrate
plants' circulatory systems, which then results in
blockages that stop the flow of nutrients from leaves to
roots. To slow huanglongbing, scientists have imported
wasps from Asia to prey on the psyllids, but they do not
know how introducing yet another species might impact
the fruit-growing habitats. The best long-term solution may
be genetic modification, which faces a long and costly
road to regulatory approval and public acceptance. In this
case, citrus trees would be genetically altered to resist the
attack of the psylids.
, What is a noted negative in using genetic engineering to
solve this problem of the psylids damage to U. S. citrus
crops?
Researchers could use embryonic stem cells to find
the cure to many disorders and illnesses.
Stem cell research is an emotional topic. Although the
advancements in research are remarkable, a portion of
society voices ethical reservations concerning the
research. Which statement would NOT be used by people
with these reservations?
Release of genetically-engineered organisms into the
environment with unpredictable results.
Genetically modified grass varieties that carry genes for
disease and drought resistance are now available. They
were produced by recombinant DNA technology.
However, the government has still not approved the sale
of most of them, due to cautionary factors. What is the
main reason for this concern?
More African elephants today naturally lack tusks
compared to the elephant populations 100 years ago,
because big game hunters sought elephants for ivory.
What situation is an example of artifical selection?
The diagram shows the incorporation of a virus
containing a healthy gene for insulin, into the
pancreas cell of a diabetic. This procedure is known
as __________.
The diagram shows the incorporation of a virus containing
a healthy gene for insulin, into the pancreas cell of a
diabetic. This procedure is known as __________.
inadequate technology.
