Associated with inactivated DNA
a. Methylation
b. Enhancer activity
c. RNA capping
d. RNA spliceosome activity
e. Reverse transcription
Ans: a. Methylation
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Why are contaminants such as TCEs and PCBs so difficult to remove using traditional methods?
A. They easily adsorb onto organic matter in the environment. B. They are too toxic to be safely handled. C. They naturally degrade into harmless forms that cannot be distinguished from the natural chemical makeup of the environment. D. They are so volatile they escape into the atmosphere so they're impossible to contain.
Based on the structural similarity of vertebrate limbs, we can conclude that these structures are examples of ____
a. biogeography b. mutations in master genes c. analogous structures d. morphological convergence e. morphological divergence
Whales and elephants use sound to communicate with which kind of receptor?
a. photoreceptors b. nociceptors c. thermoreceptors d. chemoreceptors e. mechanoreceptors
Plant cells release hydrogen ions and oxygen from
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