__________ in annelids regulate the composition of
body fluid. Fill in the blank(s) with the appropriate word(s).
Answer: Nephridia
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The virus structure indicated by the arrow labeled C is the
A. the bacteriophage. B. genetic material, DNA or RNA. C. the protein coat, or capsid. D. the bacterial membrane. E. the lipid-rich envelope.
The rapid increase in the population of Canada geese in the United States can be primarily attributed to ____
a. an increase of crop predation b. a decrease in avian diseases c. the suspension of hunting geese for many years d. an increase in wetlands e. an increase in the number of nonmigratory geese
A new compound developed in the lab was tested as a mutagen. When the Ames test was performed, the results were numerous bacterial colonies following exposure. This result means the chemical
A) is safe. B) is radioactive. C) would be a great candidate to use for chemotherapy. D) is a mutagen and also may be a carcinogen. E) causes apoptosis.
Which of the following is diploid?
A) gametophyte B) egg C) megaspore D) sperm E) zygote