BS 161 Exam Questions With Answers

BS 161 Exam Questions With Answers A controlled way of asking and answering unbiased questions about the world is called a(n): - ANSWER experiment The feature of an experiment that is not changed from one treatment to the next is referred to as a(n): - ANSWER control In some experiments, several identical groups are set up, keeping conditions similar among them. In the _____ group, a change is deliberately introduced. In the _____ group, this change is not introduced. In this way, the researcher can determine if the change has an effect. - ANSWER test ; control In scientific inquiry, hypotheses lead most directly to: - ANSWER predictions Entropy can be thought of as the amount of _____ in a system. - ANSWER disorder Which of the statements regarding living organisms versus nonliving things is true? - ANSWER Living organisms, for example a single celled organism, generally contain more different kinds of chemical compounds than do non-living things, for example, rock. All of the chemical reactions in a cell that are required to sustain life are referred to as - ANSWER metabolism The language of nucleic acids is converted to the language of amino acids during the process known as - ANSWER translation The language of DNA is converted to the language of RNA during the process known as - ANSWER transcription Which one of the statements represents the flow of information as described by the central dogma of molecular biology? - ANSWER Information in DNA is transcribed into RNA, which carries the information to make protein. At some point in their life cycle, all cells have a _____, whereas not all cells have a(n) _____. - ANSWER plasma membrane; nuclear membrane One of your friends is arguing that viruses are alive. What information would you provide to convince him that viruses can't be considered alive? - ANSWER Viruses cannot carry out metabolic reactions on their own. Which one of the pairs would be classified as isotopes of each other? - ANSWER 12C and 13C Which of these choices contributes to the measurement referred to as atomic mass? - ANSWER protons and neutrons