The testing method involving the separation of serum proteins by electrophoresis, their subsequent transfer to special filters, and then probing with patient sera is called
A. the Quellung test.
B. Ouchterlony double diffusion.
C. the Western blot.
D. immunelectrophoresis.
E. a radioimmunoassay (RIA).
Answer: C
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Small cells function more effectively, because as cells become larger their surface area to volume ratio:
A. decreases. B. is cubed. C. increases. D. stays the same. E. is squared.
The process illustrated in the figure is a step in
a. the production of recombinant DNA. b. probing for transferred genes. c. DNA fingerprinting. d. sequencing DNA. e. producing radioactive probes.
Respond to statements 99–103 in reference to the four regions of
a nephron listed below. a. Bowman’s capsule b. proximal tubule c. descending portion of loop of Henle d. distal tubule M 99. Sodium ions are actively transported out from this region. E 100. Filtration of the blood occurs in association with this structure. D 101. This region of the tubule is impermeable to sodium exit. M 102. Permeability to water is regulated by antidiuretic hormone in this structure. E 103. The glomerular capillaries are intimately associated with this structure.
During which phase of mitosis does cytokinesis occur?
A) Anaphase B) Prophase C) Metaphase D) Telophase