Which of the following is NOT a nitrogenous waste product produced by the excretory systems of animals?
A. ammonia
B. urea
C. bile pigments
D. uric acid
Answer: C
Biology & Microbiology
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The vast majority of microorganisms found in soils have been successfully cultured in the laboratory.
Answer the following statement true (T) or false (F)
Biology & Microbiology
Ephedra, evergreen desert shrubs, are in which of the following plant groups?
a. cycads b. gnetophytes c. conifers d. ginkgos e. angiosperms
Biology & Microbiology
In a pedigree, an affected male would be designated by
A. a shaded circle. B. an open square. C. a square with a line through it. D. an open circle. E. a shaded square.
Biology & Microbiology
Cadherins _______
(a) are used to transfer proteins from one cell to another (b) mediate cell-cell attachments through homophilic interactions (c) are abundant in the plant cell wall (d) bind to collagen fibrils
Biology & Microbiology