Biochemical tests are no longer very important for the identification of enteric bacteria.
Answer the following statement true (T) or false (F)
False
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Sulfonamides inhibit the production of folic acid and, therefore, inhibit the synthesis of ________.
A. peptidoglycan B. aromatic amino acids C. purines and pyrimidines D. ribose
Consider the phylogeny (Fig. 34.15) below. The group Dikarya has more species than all other taxa on the tree combined
Using only the information conveyed by the labeled phylogeny below, indicate which one of the following statements is a plausible explanation why this is so. A. The amount of available habitat is greater for members of the Dikarya. B. There hasn't been enough research done on the Chytrids, so there may be many more undescribed species. C. The evolution of hyphae allowed for rapid speciation of four of the five major groups of fungi. D. The Dikaryotic condition provides more genetic variation and opportunities for evolution of new species.
The types of human genes most likely to be duplicated, resulting in multiple copies, are
_____ genes controlling basic tissue development. _____ immune system genes. _____ genes for cell surface receptors. _____ genes for controlling basic metabolism.
In the figure above, which DNA fragment is closest to the positive electrode?
a. A b. B c. E d. G e. H