A very highly soluble nitrogenous waste, excreted into water by bony fishes, aquatic invertebrates, and aquatic amphibians is
A. uric acid.
B. ammonia.
C. uracil.
D. amino acid.
E. urea.
Answer: B
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Which of the following is an intracellular parasite
that causes sexually transmitted disease? a. Chlamydia b. Cyanobacteria c. Clostridium d. Chondromyces e. all of these
France is at almost the same latitude as Nova Scotia. Why is France's climate so much milder?
A) France is surrounded by mountains that buffer it from all severe weather conditions. B) Nova Scotia isn't near a large body of water, but France is located adjacent to the ocean. C) There are more people in France than Nova Scotia; thus human activity warms up the former region during colder periods of the year. D) The Gulf Stream brings warm water from the tropical Atlantic to France, modifying its climate.
Often, the second part of a scientific name is
a. a Latinized description of a particular trait b. the same as for other members of the same genus c. capitalized if it derives from a proper name d. different in different locations
The cells of a gametophyte are
A) tetraploid. B) haploid. C) triploid. D) diploid. E) unable to divide by mitosis.