Bio 212 Exam 4 Test Questions And Review 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 ANS 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 ANS 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. ANS 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) ANS 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. ANS 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. ANS 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
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 ANS 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 ANS 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. ANS 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) ANS 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. ANS 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. ANS 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
