Dna 1) links together the "sticky ends" of cut dna segments 2)attaches to dna molecules at specific sites and cut both strands of dna at that place 3) only cuts rna molecules at specific sites and cuts both strands of dna at that place 4) is a chemical machine that makes parts of the cell membrane'

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?

In which state was more than 100 billion tons of coal mined in 2005?