Trypanosomes have a novel post-transcriptional process for editing mitochondrial rna. in this form of rna editing, several uracil bases are inserted at specific locations in an mrna (e. g., for purposes of shifting the reading frame into correct position). the insertions are directed by short guide rnas (grnas) that encode editing "instructions" in the form of complementary base-pairing sequences. which enzyme involved in this process catalyzes the addition of uracil (u) bases to the mrna?

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?

Tides that occur during the new and full moons

Which term describes a normal value for something in the body? a.homeostasis b.set point c.feedback loop d.integration center