Exam 3 april 2008 with answers

Exam 3 april 2008 with answers - Exam 3 Biology 187 Spring...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Exam 3 Biology 187 Spring 2008 While waiting for the exam to begin, enter your name in the appropriate scantron box in the following manner: If you are “Jane Doe” enter “Doe” followed by two spaces and then the initials of your Teaching Assistant followed by some more spaces and then “Jane” as in “Doe AS Jane” Your teaching assistant should be in the following list. Ashbeel Samuel AS Brigitte Hogan BH Dani Moore DM Elizabeth Hagen EH Jennifer Litteral JL John Benedict JB Jonathan Douglas JD Lita Bozler LB Michelle McCrackin MM Rebecca Clark RC Witt Taylor WT Bubble in your student ID, using the 1000 number. When the exam begins, you will find 51 questions. Answer them all. Do not spend too much time on any one question. 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
1. It is NOT true that “a scientific hypothesis is an educated guess about the outcome of a scientific experiment.” Why is that definition wrong? a. Science involves more than experiments; collecting observational data is also important. b. Scientific hypotheses are more than just guesses; they are based on solid scientific theories. c. Making an educated guess about the outcome of an experiment is part of the process of testing a hypothesis but not the hypothesis itself. [correct] d. Scientists simply do not guess but instead always require evidence before doing research. 2-5. (M) In a recent study, scientists discovered that the ends of the chromosomes (called telomeres) are longer in older people who exercise heavily each week than those of older couch potatoes. (N) Now it is possible that intense exercise is responsible for maintaining chromosomal telomeres. (O) Of course, it could be that what is going on is that older people with longer telomeres are genetically predisposed to age less rapidly, and they are therefore physically able to exercise more vigorously. (P) With these possibilities in mind, researchers studied older identical twins who exercised differently. (Q) They found that if one member of a pair of twins worked out much more than the other, the couch potato twin had shorter telomeres. 2. What is sentence (Q)? Choose among the list below. a. Causal question, b. Hypothesis, c. Prediction, d. Test evidence [correct], e. Conclusion 3. What is sentence (N)? Choose among the list above. [b] 4. What is sentence (O)? Also choose among the list above. [b] 5. What prediction is not explicitly stated but nonetheless was part of this study? a. The more an individual exercises, the shorter his or her telomeres should be. b. Because identical twins are genetically the same, testing them should act as a control for genetic difference effects in this experiment. c. When identical twins differ in their exercise regime, the one that exercises more should have longer telomeres. d.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 10

Exam 3 april 2008 with answers - Exam 3 Biology 187 Spring...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online