BIO 182 Exam 2, Bio - Ch 37 Learning
Curve, Chapter 37 Pre Class
Assignment, Biology Exam 3, Misc.
Chapter 38 achieve questions ,
Chapter 39, bly 122 chp 37 learning
curve, honors biology exam four
mocks 2025
Which of the following present challenges that make
gas exchange more difficult for fish than for
terrestrial animals? Select all that apply.
,A. Water is denser and more viscous than air.
B. Water contains much less O2 than air per unit
volume.
C. Gills have less surface area than lungs.
D. Unidirectional flow of water is less efficient than
tidal ventilation.
E. Diffusion occurs more slowly in water than in air.
A,B,E
In a mammal's bloodstream, where would you expect
to find oxygen? Select all that apply.
A. dissolved in blood plasma
B. attached to the heme group of myoglobin in red
blood cells
C. attached to the heme groups of hemoglobin in red
blood cells
D. attached to the heme group of myosin in red blood
cells
E. dissolved in hemolymph
A,C
,If the partial pressure of oxygen (pO2) in a man's
blood plasma decreased below that in his red blood
cells, what would be the result?
A. More oxygen would diffuse into his red blood cells
and be transported throughout his body.
B. Oxygen would diffuse out of his red blood cells,
and less oxygen would be transported throughout his
body.
C. The concentration of oxygen would be the same in
red blood cells and blood plasma.
B
As fluid moves through a vessel, which factors
determine the flow resistance? (Select all that apply.)
A. the radius of the vessel
B. the pressure exerted by the heart
C. the length of the vessel
D. the viscosity of the fluid
A,C,D
, In which of the following animals does blood flow
directly from respiratory organs to tissues without
first returning to the heart?
A. fish
B. birds
C. amphibians
D. reptiles
E. mammals
A
What are desirable characteristics for a gas exchange
surface, such as the endothelial cells lining the inside
of lung? (Select all that apply.)
A. a thickness under 10 micrometers
B. a thickness of 100 micrometers
C. a large surface area
D. a small surface area
A,C
A decrease in arterial blood pH sensed in carotid
bodies will result in increased blood O2 levels.