In an experimental situation, a student researcher inserts an mrna molecule into a eukaryotic cell after she has removed its 5 cap and poly-a tail. which of the following processes would you expect her to find to have occurred?
a. the mrna could not exit the nucleus to be translated.
b. the cell recognizes the absence of the tail and polyadenylates the mrna.
c. the molecule is digested by restriction enzymes in the nucleus.
d. the molecule is digested by exonucleases since it is no longer protected at the 5' end.
e. the molecule attaches to a ribosome and is translated, but more slowly.

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

Which of the following would not diffuse through the plasma membrane by means of simple diffusion? 1 oxygen 2 glucose 3 a steroid hormone 4 a lipid soluble vitamin

What is the solubility-product constant of barium sulfate, baso4, if a saturated solution is 1.03 ´ 10-5 m?