A thin, crescent-shaped organism with a single flagellum originating from a basal body and which folds back laterally across the cell would most likely be a member of the genus
A) Trypanosoma.
B) Glossina.
C) Entamoeba.
D) Gambiense.
Answer: A
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CAM and C4 plants conduct photosynthesis in ways that allow them to live in drier areas than most C3 plants can tolerate
The effectiveness of different plants in restricting water loss while still allowing for influx of adequate carbon dioxide can be compared using the transpiration ratio, which is calculated by dividing the amount of water transpired by the amount of carbon dioxide fixed by photosynthesis. If a typical transpiration ratio for a C3 plant is 500, then possible values for CAM and C4 plants could be _____. A) 750-1000 B) 500 C) 50-250
Although there is a strong genetic component to hip dysplasia in dogs, new research suggests
that environment also plays a role. Environmental factors that influence the development of hip dysplasia include such things as overweight condition, injury at a young age, or repetitive motion on the forming joint (e.g., jogging with a puppy under the age of one year). Based on this, which of the following is true about this disease?
a. This disease has evolved with the different dog populations. b. This disease is both acquired and inherited. c. This disease occurs due to mating individuals of different species. d. This disease is a result of natural selection.
Define paedomorphosis and allometric growth, and briefly explain how each contributes to the process
of macroevolution. What will be an ideal response?
Water diffuses through certain organs such as the kidneys and bladder much faster than would occur by passive diffusion through a lipid bilayer alone. What accounts for this more rapid rate of water transport in these organs?
A. the composition of lipids changes to promote water transport B. the presence of molecules that bind water and change its membrane permeability properties C. presence of an ATP-driven enzyme for water transport D. presence of a water pump E. presence of aquaporin channels for facilitated diffusion of water