One of the earliest uses of biotechnology was
A) creating transgenic organisms.
B) creating bacteria that synthesized human insulin.
C) extracting and using biochemicals from microorganisms.
D) using yeast to ferment fruit into wine.
D) using yeast to ferment fruit into wine.
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A genome can be best described as
A) a segment of DNA that encodes an RNA or a protein. B) an organized package of DNA and proteins. C) a single pair of nucleotides connected by hydrogen bonds. D) the DNA in all chromosomes in a cell.
To test whether the XFF signal system is similar to that of epinephrine, you microinject a nonhydrolyzable analogue of GTP into an XFF-responsive cell. If the XFF mechanism is similar to that of epinephrine, you would expect the cellular response to be
A) blocked completely. B) prolonged. C) delayed. D) 50 percent of normal. E) It is not possible to predict without knowing how many receptors are present on the cell.
Buttress roots help trees obtain oxygen from flooded soil. Indicate whether the statement is true or false
Transcription of a part of DNA molecule with a nucleotide sequence of A-A-A-C-A-A-C-T-T results in a mRNA molecule with the complementary sequence of
A. G-G-G-A-G-A-A-C-C B. U-U-U-C-U-U-C-A-A C. U-U-U-G-U-U-G-A-A D. T-T-T-G-A-A-G-C-C E. C-C-C-A-C-C-T-C-C F. None of these choices are correct