"cat food, cola, toothpaste," your roommate begins reciting items into the phone as you throw your books in the backseat and get into your car; you're supposed to hit the store on the way home. he continues to list a few more items. finally, he wraps up: "coffee creamer, spaghetti sauce, dish liquid, and ice tea mix." you forget a couple of things, but you do manage to get the cat food, cola, and toothpaste. your memory for these items reflects the effect.

Aresearcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (tmv). the cell contents are left in a covered test tube overnight. the next day this mixture is sprayed on tobacco plants. we expect that the plants would ) develop some but not all of the symptoms of the tmv infectionb) develop the typical symptoms of tmv infectionc) not show any disease symptomsd) become infected, but the sap from these plants would be unable to infect other plants