If all of the restriction fragments in a DNA digest were of very low molecular weight, then all of the fragments on the electrophoretic gel will be closest to the positive pole and furthest from the negative pole.
Answer the following statement true (T) or false (F)
True
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Which of the following respiratory systems is NOT closely associated with the blood supply?
A) the lungs of a vertebrate B) the gills of a fish C) the tracheal system of an insect D) the skin of an earthworm
Pollen grains are produced directly by
a. carpels. b. mitosis. c. meiosis. d. stigmas. e. pollen sacs
Which of the following bacterial components are examples of virulent factor
a. pili d. cell membrane b. capsule e. some enzymes c. ribosome f. Fimbraie A. b, c, d, and f B. a, b, e, and f C. a, b, and f D. a, b, d, and f
Untreated gonorrhea in males may lead to
A. sterility. B. urinary tract infections. C. prostatic abscesses. D. orchitis. E. All of the choices are correct.