DNA fingerprinting utilizes
a. SNPs.
b. lipoplexes.
c. prions.
d. tandem repeats.
e. "suicide tags."
D
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Surfactants are detergents that work as microbicidal agents because they increase the surface tension of cell membranes.
a. true b. false
Monocots include plants such as
A. corn, wheat, lilies, orchids, and palms. B. mosses, ferns, algae, and liverworts. C. roses, clover, tomatoes, oaks, and daisies. D. cycads, ginkgoes, pines, and firs.
A researcher is studying the integral membrane protein "mysteriase" and chooses to perform an experiment similar to that performed by Frye and Edidin. The researcher fuses a mouse cell expressing mysteriase with a human cell. The fused cell is incubated at 37°C prior to being cooled to 0°C and labeled with a fluorescent antibody against mysteriase. When observed with a fluorescent microscope, mysteriase is observed to remain on one side of the fused cell. What is the most likely explanation for this surprising observation?
A. Mysteriase is a flippase enzyme that enhances lipid flip-flop rather than lipid lateral movement. B. Mysteriase is bound to the cytoskeletal filament. C. Mouse cells are less fluid than human cells. D. There is an error in the experimental procedure because this result is impossible. E. Mysteriase rigidifies the plasma membrane.
Symptoms of disease differ from signs of disease in that symptoms
A) are changes felt by the patient. B) are changes observed by the physician. C) are specific for a particular disease. D) always occur as part of a syndrome. E) None of the answers is correct.