Gel electrophoresis separates DNA fragments according to their:
A. percentage of labeled nucleotides
B. base sequence
C. number of attached primers
D. size
Ans: D. size
You might also like to view...
In all organisms, active transport across a membrane requires
A) equal concentrations of ions on both sides of the membrane. B) a resting potential of 0 mV. C) exergonic movement indicated by the direction of the electrochemical potential. D) an asymmetric distribution of ions across a membrane. E) both choices B and D
A cell that does not circulate in blood, but instead settles in tissues near the skin and in the digestive tract, producing and releasing histamine when tissue is damaged is a(n)
A. basophil. B. mast cell. C. osteocyte. D. macrophage. E. T cell.
Some species of sharks, rays, and bony fish sense the movement of prey through the use of:
a. electroreceptors. b. mechanoreceptors. c. thermoreceptors. d. interoreceptors. e. nociceptors.
Choose the letter of the best match from the following:A. birth control pillB. intrauterine deviceC. diaphragmD. foams and jelliesE. vasectomyPrevention of embryo implantation.
Fill in the blank(s) with the appropriate word(s).