Zidovudine is a type of HIV drug that blocks the reverse transcriptase, an enzyme used by viruses to reverse-transcribe their RNA into a DNA strand that they can integrate with the host's genome. Viruses only have fragments of RNA strands that are translated into DNA using the reverse transcriptase. The fragments of DNA material from the virus acts like retrotransposons. Because Zidovudine blocks the action of the reverse transcriptase, the body can halt the proliferation of the HIV.
Hello!
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Which of these is an effect of nonpoint-source pollution on agricultural land?
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The answer is "D. Salinization of cropland".
:)
Mitochondria and chloroplasts likely evolved from engulfed prokaryotes that once lived as independent organisms. At some point, a eukaryotic cell engulfed an aerobic prokaryote, which then formed an endosymbiotic relationship with the host eukaryote, gradually developing into a mitochondrion.
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According to Newton's 1st law of motion, called the law of inertia, if you kick a soccer ball on a field of grass, it will stop because <u>friction.</u>