In a single molecule FRET experiment, a 250 nucleotide biotinylated RNA is immobilized on a streptavidin coated surface, in the presence of 1 mM Mg2 . The RNA contains a Cy3 fluorescent label on nucleotide 57, and a Cy5 fluorescent label on nucleotide 225. When 20 mM Mg2 is added to the RNA, the Cy3-Cy5 FRET signal doubles. Briefly describe a change in the RNA structure that could have caused the increase in FRET signal. (3 pts)

The allele for curly hair is incompletely dominant. if a mother is homozygous for curly hair and the father is homozygous for straight hair, what percentage of the offspring will exhibit characteristics of both parents? 25 percent 50 percent 75 percent 100 percent

Which of the following is a difference between active transport and facilitated diffusion? view available hint(s)which of the following is a difference between active transport and facilitated diffusion? facilitated diffusion can move solutes against a concentration gradient, and active transport cannot.active transport involves transport proteins, and facilitated diffusion does not.facilitated diffusion involves transport proteins, and active transport does not.active transport requires the expenditure of cellular energy, and facilitated diffusion does not.

What happens during interphase? (1)the nucleus grows to its full size. (2)the cell grows to its full size. (3)the nucleus divides into two nuclei. (4)the cell divides into two cells.