Exam 1 Fall 07 Key MCB181R Dr. Jorstad

Exam 1 Fall 07 Key MCB181R Dr. Jorstad - MCB 181R Fall 2007...

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MCB 181R, Fall 2007 Instructor: Dr. S. Jorstad Exam I v1 Detailed key (one version only) For multiple choice questions (each worth 3 points), bubble all correct answers (there may be more than one); there is a 1 point penalty for incorrect answer choices. For short essays (each worth 5 points): confine your answers to the space provided on the scansheet. Writing outside those margins will adversely affect the machine-scoring of your exam. You may use bulleted points to express yourself, as long as your meaning is clear. Explanations are in red 1. Science a. is the only way for humans to answer questions about life. b. relies on evidence that must be replicable (repeatable) by others. * c. counts as evidence only those things that can be directly perceived by the senses. indirect observation and inference are also acceptable d. operates under special restrictions, such as the use of logical reasoning to evaluate observations. * e. depends on the contributions of geniuses like Albert Einstein and Charles Darwin. Science is cumulative, and builds incrementally on the work of those who came before. If Darwin had never lived, others of his time would have soon come to the same conclusions 2. Stem cells are cells that exist in early embryos; these cells have not yet been programmed for any particular role, and can become any type of cell as the embryo develops. Science is NOT a good way to try to answer questions about a. whether or not a particular cell is a stem cell. b. whether or not a particular kind of stem cell can develop into brain tissue. c. whether or not human embryos can be created in a test tube. d. whether or not human embryos should be created and destroyed in order to extract stem cells from them to treat diseases in others. * ethical issue, not scientific question e. whether or not stem cells are beautiful. * aesthetic, not scientific 3. Which of the following would be considered empirical evidence? a. The observation of a person walking into a room. * uses sense of sight b. The reading on electronic thermometer. * ditto c. The report by a man that the goddess Lakshmi appeared before his eyes. individual experience, not replicable by all other humans d. The opinions of the great scholar and Nobel Prize winning scientist, Dr Francis Crick. opinion is not evidence e. Records of the positions of the stars over several years. * record of observations made using sense of sight 4. The practice of science has certain limitation, including which of the following? a. It relies on the expertise and opinions of well-known scientists—authorities whose views are not questioned. Science relies on evidence, not authority 1
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b. Scientists are fallible humans, who try to be objective, but who are often biased by their preconceived notions, their hopes and expectations, even their age, gender, or ethnicity. * c. It is limited to information perceived by human senses. * d. Science can be done badly, and science can be misused. * e. Science has no way to correct its mistakes, so incorrect conclusions can persist for
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Exam 1 Fall 07 Key MCB181R Dr. Jorstad - MCB 181R Fall 2007...

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