What is the main purpose of scientific models? a. the main purpose of models is to have a physical object to which to refer. b. the main purpose of models is to represent observations. c. the main purpose of models is to study systems that no longer exist. d. the main purpose of models is to gain a better understanding of the world. select the best answer from the choices provided a b c d

How do symptoms created by inflammation the doctor

How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !