If cytosine makes up 15% of the bases in a sample of DNA from an organism, then adenine makes up what percentage of the bases?
What will be an ideal response?
35%
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A dye often used for its ease and sensitivity to visualize nucleic acid after agarose gel electrophoresis is
A. nigrosin. B. malachite green. C. gold oxide. D. ethidium bromide.
One currently accepted theory suggests that the bodies in the Oort cloud formed
a. near the present orbits of the terrestrial planets and were then ejected by them. b. near the present orbits of the Jovian planets and were then ejected by them. c. right there in the Oort cloud very far from the Sun.
In cnidarians, nematocysts are housed in specialized cells called:A
choanocytes. B. cnidocils. C. pseudopodia. D. nerve nets. E. cnidocytes
What is required for facilitated diffusion to take place?
a. energy from ATP b. a transmembrane protein c. the transport of large food particles d. the transport of small nonpolar molecules e. movement down a concentration gradient