Cloning a gene involves all of the following EXCEPT ________.
A. insertion of the gene into an appropriate vector
B. isolating the fragment of DNA containing the desired gene
C. introducing ligated DNA into E. coli cells
D. expression of the vector and the gene in a cell-free environment
Answer: D
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The overall process by which information carried by a signaling molecule is translated into changes that occur inside the cell is called signal ____.
a. digestion b. digression c. induction d. interaction e. transduction
The term for plankton that lives near the surface is: a. holoplankton
b. neustron. c. nekton. d. tripton.
If you wished to obtain the strongest phototropic response from a shoot, which wavelength of light
would you use? a. less than 500 nm b. 660 nm c. 730 nm d. 800 nm e. more than 800 nm
What caused intense selective pressure for terrestrial vertebrates to evolve internal fertilization?
A. There is no mechanism for eggs and sperm to find one another. B. Terrestrial organisms only produce small quantities of gametes. C. The eggs are too small for the males to find and fertilize. D. The gametes could not be released next to each other, as they would soon dry up. E. Gametes and zygotes are vulnerable to predators.