The high osmolarity of the renal medulla is maintained by all of the following EXCEPT _____

A) active transport of salt from the upper region of the ascending limb
B) the spatial arrangement of juxtamedullary nephrons
C) diffusion of urea from the collecting duct
D) diffusion of salt from the descending limb of the loop of Henle


D

Biology & Microbiology

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Animal egg production is called ____

a. spermatogenesis b. oogenesis c. oocytosis d. spermatocytosis e. cytokinesis

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The taxonomic science that stresses the presence of shared derived characters in related organisms is called ________

Fill in the blank(s) with correct word

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The genome of which of the following types of animal virus can act directly as mRNA?

A. retroviruses B. +ssRNA viruses C. -ssRNA viruses D. ssDNA viruses E. dsRNA viruses

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Gills are respiratory structures found in fish, nudibranch mollusks, and some amphibians

Indicate whether the statement is true or false

Biology & Microbiology