According to the above figure, which letter corresponds to the lowest tubular fluid osmolarity under normal conditions?
A. A
B. B
C. C
D. D
E. E
Answer: D
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If all functional groups are removed from an organic molecule, leaving only a hydrocarbon chain, the molecule becomes a:
A. Lipid B. Carbohydrate C. Protein D. Nucleic acid
Nearly all dinosaurs became extinct as a result of direct competition with mammals
A. true B. false
Describe the source, digestion, and ultimate utilization of proteins by your body
What will be an ideal response?
The following statements regarding penicillin production and applications are true EXCEPT
A) Penicillin is a secondary metabolite produced by a filamentous fungus. B) Penicillin derivatives can be produced by biosynthetic or semisynthetic methods. C) Natural penicillin (penicillin G) inhibits a wide spectrum of bacteria. D) Penicillin selection method is used to enrich the auxotrophic mutations. E) -lactamases, which cause penicillin resistance, are easily transferable when they are located on plasmids.