When no coefficient is written in front of a chemical formula in an equation 1. the formula is a catalyst.
2. the equation is not balanced yet.
3.it is assumed to be zero.
4.it is assumed to be one.

One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. b. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. c. prokaryotic poly-a tails have other functions, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails.

The rate at which molecules water and oxygen can enter a cell is determined by the-

Which of the following is the most likely outcome of global warming