BIO 212 EXAM 4 TEST QUESTIONS AND ANSWERS
True or False: In both animals and plants, most adult cells contain all the genes present
in the embryo.
A. True for animals but not plants
B. False for both plants and animals
C. True for both animals and plants
D. True for plants but not animals - Answers - C. True for both animals and plants
During oogenesis, meiosis results in ________.
A. two equally sized cells that are both typically fertilized
B. four equally sized cells that stop dividing in meiosis I
C. two or three small cells and one large cell that develops further if fertilize
D. two equally sized cells, but only one that is typically fertilized - Answers - C. two or
three small cells and one large cell that develops further if fertilize
How is a stem cell in an adult organism different from most of the other cells in the
adult? See Section 21.1 (Page 420) .
A. Only stem cells can divide in adult organisms.
B. Stem cells contain all of the DNA present in the embryonic cells.
C. cell that remains a stem cell and one that can differentiate into a particular,
specialized type of cell.
D. Stem cells are differentiated, but other adult cells are not. - Answers - C. Stem cells
can divide to form one daughter cell that remains a stem cell and one that can
differentiate into a particular, specialized type of cell.
What embryo-produced hormone maintains progesterone and estrogen secretion by the
corpus luteum through the first trimester of pregnancy?
A. gonadotropin-releasing hormone (GnRH)
B. follicle-stimulating hormone (FSH)
C. human chorionic gonadotropin (hCG)
D. progesterone
E. luteinizing hormone (LH) - Answers - C. human chorionic gonadotropin (hCG)
Why is breathing more difficult at high altitudes, such as at the top of Mount Everest?
See Section 42.2 (Page 876) .
A. The lower atmospheric pressure reduces the ability of the body to pump air into the
body.
B. At high altitudes, the air only contains nitrogen, so breathing is more difficult.
, C. The lower partial pressure of oxygen in the atmosphere reduces the rate of diffusion
of oxygen into your body.
D. Carbon dioxide will not diffuse out of your body at high altitude. - Answers - C. The
lower partial pressure of oxygen in the atmosphere reduces the rate of diffusion of
oxygen into your body.
What might be a consequence of global warming for fishes living in a pond? See
Section 42.2 (Page 876) .
A. With increasing temperature, lower oxygen content of the pond water will lead to an
increase in metabolic rate and oxygen consumption in fishes.
B. As the planet warms, the increase in oxygen will lead to increased number of fishes.
C. As the planets warms, aquatic habitats such as a pond will contain less dissolved
oxygen, reducing the ability of fishes to acquire oxygen for their respiratory needs.
D. Nothing will happen, as temperature and oxygen content are not related. - Answers -
C. As the planets warms, aquatic habitats such as a pond will contain less dissolved
oxygen, reducing the ability of fishes to acquire oxygen for their respiratory needs.
Which feature is common to gills, lungs, and tracheae? See Section 42.3 (Page 878) .
A. Dead space
B. Countercurrent exchange mechanism
C. Large surface area
D. Delivering oxygen directly to cells without a circulatory system - Answers - C. Large
surface area
A mutation causes follicles to overproduce estradiol at the beginning of their maturation.
What effect would this have on ovulation during the ovarian cycle?
A. Ovulation would occur earlier in the cycle
B. Ovulation would occur later in the cycle
C. Ovulation would not occur
D. Ovulation would be unaffected by this mutation - Answers - A. Ovulation would occur
earlier in the cycle
Which hormone would be a good early indicator for pregnancy test kits?
A. Estradiol
B. LH
C. GnRH
D. Human chorionic gonadotropin
E. FSH - Answers - D. Human chorionic gonadotropin
A patient in the Emergency Room has difficulty breathing. Through surface examination,
the doctor finds that a broken rib has pierced the chest cavity, causing the pressure in
the cavity to equalize with atmospheric pressure. Why can't the patient breathe?
True or False: In both animals and plants, most adult cells contain all the genes present
in the embryo.
A. True for animals but not plants
B. False for both plants and animals
C. True for both animals and plants
D. True for plants but not animals - Answers - C. True for both animals and plants
During oogenesis, meiosis results in ________.
A. two equally sized cells that are both typically fertilized
B. four equally sized cells that stop dividing in meiosis I
C. two or three small cells and one large cell that develops further if fertilize
D. two equally sized cells, but only one that is typically fertilized - Answers - C. two or
three small cells and one large cell that develops further if fertilize
How is a stem cell in an adult organism different from most of the other cells in the
adult? See Section 21.1 (Page 420) .
A. Only stem cells can divide in adult organisms.
B. Stem cells contain all of the DNA present in the embryonic cells.
C. cell that remains a stem cell and one that can differentiate into a particular,
specialized type of cell.
D. Stem cells are differentiated, but other adult cells are not. - Answers - C. Stem cells
can divide to form one daughter cell that remains a stem cell and one that can
differentiate into a particular, specialized type of cell.
What embryo-produced hormone maintains progesterone and estrogen secretion by the
corpus luteum through the first trimester of pregnancy?
A. gonadotropin-releasing hormone (GnRH)
B. follicle-stimulating hormone (FSH)
C. human chorionic gonadotropin (hCG)
D. progesterone
E. luteinizing hormone (LH) - Answers - C. human chorionic gonadotropin (hCG)
Why is breathing more difficult at high altitudes, such as at the top of Mount Everest?
See Section 42.2 (Page 876) .
A. The lower atmospheric pressure reduces the ability of the body to pump air into the
body.
B. At high altitudes, the air only contains nitrogen, so breathing is more difficult.
, C. The lower partial pressure of oxygen in the atmosphere reduces the rate of diffusion
of oxygen into your body.
D. Carbon dioxide will not diffuse out of your body at high altitude. - Answers - C. The
lower partial pressure of oxygen in the atmosphere reduces the rate of diffusion of
oxygen into your body.
What might be a consequence of global warming for fishes living in a pond? See
Section 42.2 (Page 876) .
A. With increasing temperature, lower oxygen content of the pond water will lead to an
increase in metabolic rate and oxygen consumption in fishes.
B. As the planet warms, the increase in oxygen will lead to increased number of fishes.
C. As the planets warms, aquatic habitats such as a pond will contain less dissolved
oxygen, reducing the ability of fishes to acquire oxygen for their respiratory needs.
D. Nothing will happen, as temperature and oxygen content are not related. - Answers -
C. As the planets warms, aquatic habitats such as a pond will contain less dissolved
oxygen, reducing the ability of fishes to acquire oxygen for their respiratory needs.
Which feature is common to gills, lungs, and tracheae? See Section 42.3 (Page 878) .
A. Dead space
B. Countercurrent exchange mechanism
C. Large surface area
D. Delivering oxygen directly to cells without a circulatory system - Answers - C. Large
surface area
A mutation causes follicles to overproduce estradiol at the beginning of their maturation.
What effect would this have on ovulation during the ovarian cycle?
A. Ovulation would occur earlier in the cycle
B. Ovulation would occur later in the cycle
C. Ovulation would not occur
D. Ovulation would be unaffected by this mutation - Answers - A. Ovulation would occur
earlier in the cycle
Which hormone would be a good early indicator for pregnancy test kits?
A. Estradiol
B. LH
C. GnRH
D. Human chorionic gonadotropin
E. FSH - Answers - D. Human chorionic gonadotropin
A patient in the Emergency Room has difficulty breathing. Through surface examination,
the doctor finds that a broken rib has pierced the chest cavity, causing the pressure in
the cavity to equalize with atmospheric pressure. Why can't the patient breathe?
