. Which of the following is one of the four major biological macromolecule classes?
a. proteases
b. hydrophilic G-proteins
c. nucleic acids
d. amorphous solids
c. nucleic acids
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Freshwater flatworms have a _______ system that is primarily important in osmoregulation, so you would expect the urine in these tubules to have an osmolarity ____ the osmolarity of the body fluids.
A. protonephridial, lower than B. protonephridial, higher than C. metanephridial, lower than D. metanephridial, higher than E. protonephridial, similar to
The serotinous cones of the longleaf pine, Pinus palustris, depend on _____ to release their seeds.
A. daylight B. extended freezes C. sustained rainfall D. fire E. animals
Radiolarians have vacuoles, which provide them with buoyancy in marine environments
Indicate whether the statement is true or false.
The last place that pressure or sound waves pass
through in hearing is the a. middle ear. b. tympanic membrane. c. oval window. d. round window. e. tectorial membrane.