BSC 120 Chapter 1 Exam Latest Update
A) Klebsiella pneumonia and E. coli can easily exchange genetic material.
Antibiotic resistance was passed from Klebsiella pneumonia to E. coli by
horizontal gene transfer in each of the co-infected patients. - ANSWER
Gentamicin is an antibiotic that is used to treat bacterial infections. A hospital
reports a sudden outbreak of a new gentamicin-resistant strain of Escherichia
coli in 5 out of 25 patients of the intensive care unit. On further investigation, it
was determined that this new strain was found only in patients that were also
infected with a known gentamicin-resistant strain of Klebsiella pneumonia. What
is the most likely explanation for the development of this new antibiotic resistant
strain of Escherichia coli?
A) Klebsiella pneumonia and E. coli can easily exchange genetic material.
Antibiotic resistance was passed from Klebsiella pneumonia to E. coli by
horizontal gene transfer in each of the co-infected patients.
B) A single spontaneous mutation arose in E. coli from a single patient leading to
gentamicin resistance in that patient. This mutation was passed along to the E.
coli in other patients by vertical descent.
C) Spontaneous mutations arose separately in the E. coli strains from each of
the 5 patients, leading to the separate evolution of gentamicin resistance in E.
coli from each of the 5 patients.
2, 1, 4, 3 - ANSWER The formulation of a hypothesis is based on observations
and refined by available information from past observations or research. Place
the following statements in the appropriate sequence showing the progression
from an observation to a testable hypothesis.
1. Does temperature affect the growth of mold or is the difference in mold
growth related to differences between the bread and the rolls?
2. You notice that bread you left on the counter has more mold on it than do the
rolls that you left in the refrigerator.
3. Bread placed in warmer temperatures should develop mold faster and more
extensively than bread placed in colder temperatures.
4. Colder temperatures impede the growth of mold.
Ecology - ANSWER Bar-headed Geese migrate from their breeding grounds to
their wintering grounds by flying over the highest peaks of the Himalayan
, Mountains where oxygen levels in the air are extremely low, and yet these birds
can produce enough muscle power to complete the arduous journey over the
tops of the mountains.
Match the following research question about this amazing feat with the
appropriate area of biology that could investigate each question.
What environmental cues and landmarks do the geese use to determine the
timing and direction of their migration over the mountains? How do they find
their way?
Anatomy and physiology - ANSWER Bar-headed Geese migrate from their
breeding grounds to their wintering grounds by flying over the highest peaks of
the Himalayan Mountains where oxygen levels in the air are extremely low, and
yet these birds can produce enough muscle power to complete the arduous
journey over the tops of the mountains.
Match the following research question about this amazing feat with the
appropriate area of biology that could investigate each question.
How do the circulatory and respiratory systems meet the demands of increased
oxygen consumption in the face of oxygen-poor air?
Cell biology - ANSWER Bar-headed Geese migrate from their breeding grounds
to their wintering grounds by flying over the highest peaks of the Himalayan
Mountains where oxygen levels in the air are extremely low, and yet these birds
can produce enough muscle power to complete the arduous journey over the
tops of the mountains.
Match the following research question about this amazing feat with the
appropriate area of biology that could investigate each question.
Is the number of mitochondria (energy producers of the cell) in muscle cells of
Bar-headed Geese larger than those of other species of geese that have less
demanding migration routes?
Molecular biology - ANSWER Bar-headed Geese migrate from their breeding
grounds to their wintering grounds by flying over the highest peaks of the
Himalayan Mountains where oxygen levels in the air are extremely low, and yet
these birds can produce enough muscle power to complete the arduous journey
over the tops of the mountains.
Match the following research question about this amazing feat with the
appropriate area of biology that could investigate each question.
A) Klebsiella pneumonia and E. coli can easily exchange genetic material.
Antibiotic resistance was passed from Klebsiella pneumonia to E. coli by
horizontal gene transfer in each of the co-infected patients. - ANSWER
Gentamicin is an antibiotic that is used to treat bacterial infections. A hospital
reports a sudden outbreak of a new gentamicin-resistant strain of Escherichia
coli in 5 out of 25 patients of the intensive care unit. On further investigation, it
was determined that this new strain was found only in patients that were also
infected with a known gentamicin-resistant strain of Klebsiella pneumonia. What
is the most likely explanation for the development of this new antibiotic resistant
strain of Escherichia coli?
A) Klebsiella pneumonia and E. coli can easily exchange genetic material.
Antibiotic resistance was passed from Klebsiella pneumonia to E. coli by
horizontal gene transfer in each of the co-infected patients.
B) A single spontaneous mutation arose in E. coli from a single patient leading to
gentamicin resistance in that patient. This mutation was passed along to the E.
coli in other patients by vertical descent.
C) Spontaneous mutations arose separately in the E. coli strains from each of
the 5 patients, leading to the separate evolution of gentamicin resistance in E.
coli from each of the 5 patients.
2, 1, 4, 3 - ANSWER The formulation of a hypothesis is based on observations
and refined by available information from past observations or research. Place
the following statements in the appropriate sequence showing the progression
from an observation to a testable hypothesis.
1. Does temperature affect the growth of mold or is the difference in mold
growth related to differences between the bread and the rolls?
2. You notice that bread you left on the counter has more mold on it than do the
rolls that you left in the refrigerator.
3. Bread placed in warmer temperatures should develop mold faster and more
extensively than bread placed in colder temperatures.
4. Colder temperatures impede the growth of mold.
Ecology - ANSWER Bar-headed Geese migrate from their breeding grounds to
their wintering grounds by flying over the highest peaks of the Himalayan
, Mountains where oxygen levels in the air are extremely low, and yet these birds
can produce enough muscle power to complete the arduous journey over the
tops of the mountains.
Match the following research question about this amazing feat with the
appropriate area of biology that could investigate each question.
What environmental cues and landmarks do the geese use to determine the
timing and direction of their migration over the mountains? How do they find
their way?
Anatomy and physiology - ANSWER Bar-headed Geese migrate from their
breeding grounds to their wintering grounds by flying over the highest peaks of
the Himalayan Mountains where oxygen levels in the air are extremely low, and
yet these birds can produce enough muscle power to complete the arduous
journey over the tops of the mountains.
Match the following research question about this amazing feat with the
appropriate area of biology that could investigate each question.
How do the circulatory and respiratory systems meet the demands of increased
oxygen consumption in the face of oxygen-poor air?
Cell biology - ANSWER Bar-headed Geese migrate from their breeding grounds
to their wintering grounds by flying over the highest peaks of the Himalayan
Mountains where oxygen levels in the air are extremely low, and yet these birds
can produce enough muscle power to complete the arduous journey over the
tops of the mountains.
Match the following research question about this amazing feat with the
appropriate area of biology that could investigate each question.
Is the number of mitochondria (energy producers of the cell) in muscle cells of
Bar-headed Geese larger than those of other species of geese that have less
demanding migration routes?
Molecular biology - ANSWER Bar-headed Geese migrate from their breeding
grounds to their wintering grounds by flying over the highest peaks of the
Himalayan Mountains where oxygen levels in the air are extremely low, and yet
these birds can produce enough muscle power to complete the arduous journey
over the tops of the mountains.
Match the following research question about this amazing feat with the
appropriate area of biology that could investigate each question.
