Which are the functional units of the kidney?
a) ureters
b) glomeruli
c) nephrons
d) renal capsules
Ans: c) nephrons
Biology & Microbiology
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Birds have
A. a backcurrent lung. B. an air sac lung. C. a parabronchial lung. D. a negative pressure lung. E. a tracheal lung.
Biology & Microbiology
What information cannot be determined from the DNA sequence of a cDNA clone?
A) exon sequences B) sequence of the promoter C) similarity to previously identified sequences D) amino acid sequence of the encoded polypeptides E) sequence of the spliced mRNA transcript
Biology & Microbiology
What happens first following a neuronal stimulation?
a. Sodium ions enter the cell. b. Sodium ions leave the cell. c. Potassium ions enter the cell. d. Potassium ions leave the cell. e. Potassium ions are involved in positive feedback.
Biology & Microbiology
The muscular system is made up of
Biology & Microbiology