which one of the following discoveries involving dna happened first?           a. avery discovered that dna was responsible for storing and passing information through generations.   b. griffith learned that a chemical changed harmless cells into harmful cells.   c. hershey and chase used bacteriophages to confirm that dna was the genetic material in genes.   d. chargaff discovered that base pairing was consistent in samples of dna.

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.

What drives an advertising campaign?

Your two friends just told you what to order for them at the drive through fast food restaurant. you give the order but when the food comes about 10 minutes later, you don't remember what each of your friends ordered your memory of the order was in __ memory. a. semantic b. flashbulb c. long-term d. short-term i think i know but i'm not really sure