Name:___________________________________
Multiple Choice. Fill in the letter of the best answer on your scantron sheet using a #2 pencil. Remember to write your name on this and your scantron sheet. Each worth 2.5 points.
1. According to your lecture syllabus, your lecture instructor’s name is: A. Mrs. Bryan B. choose “A” C. choose “A” D. choose “A” E. I mean it. If you don’t choose A, you will get the question wrong.
2. Barry Marshall’s work: A. was revolutionary 0 B. involved prions C. contradicted Germ Theory D. received immediate acceptance
3. A hypothesis is: A. the same as a theory. B. a tentative explanation for a specific phenomenon. 0 C. an explanatory idea that is broad in scope and supported by a large body of evidence. D. a widely accepted idea about a phenomenon. E. A, C, and D
4. In order to be scientifically valid, a hypothesis must be: A. phrased as a question. B. based on faith C. testable D. falsifiable E. both C & D 0
5. Which of the following would best lend itself to scientific testing? A. My mom’s chocolate chip cookies are lower in calories than your mom’s chocolate cookies. 0 B. My grandma’s peach cobbler is better than your aunt’s blueberry muffins. C. God made the rainbow as well as the rain. D. People with kind smiles make better parents.
6. Farmer Fred tries out a new fertilizer on his corn crops. What is the dependent variable? A. Farmer Fred B. no fertilizer C. amount of fertilizer D. no harvest E. amount of harvest 0
7. The role of a control in an experiment is to: A. prove that a hypothesis is correct. B. provide a basis of comparison with the experimental. 0 C. ensure repeatability. D. know what you are looking for
8. Going from a general conclusion to specific instances is the definition of: A. independent variable B. dependent variable C. deductive reasoning D. inductive reasoning 0
9. Time magazine is an example of: A. primary literature B. peer review C. peer literature D. secondary literature 0
10. To limit the effect of ___, experimenters may employ ____. A. bias, a cross-sectional survey B. bias, a double-blind experiment 0 C. authentic theories, a cross-sectional survey D. authentic theories, a double-blind experiment
11. Overexploitation is: A. Nature’s was of solving competition B. humanity’s way of solving pollution C. pollination by birds D. humanity’s shortsighted use of an organism 0
12. A large number of students attending a CU football game were given a survey about their involvement in Student Activities to show what a great university this is. Someone might question the validity of the survey due to: A. sampling error—the sample is not representative of the entire student body. B. the group conducting the survey was from the Public Relations office. C. the survey asked about what activities the students participated in 3 months ago. D. all of the above 0
13. A testimonial given on the effectiveness of a weight loss product: A. is a pack of lies B. is in no way biased C. is peer reviewed, and therefore should be believed D. is anecdotal evidence 0
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Answer questions 14-16 based upon the graph shown below.
14. The resultant graph shown here is an example of: A. positive correlation B. negative correlation 0 C. demographic transitions D. population confidence intervals
15. The “time spent dozing in class” is: A. on the X axis 0 B. on the Y axis C. on the X allies D. on the Y allies E. NOT included in this graph
16. This graph demonstrates that sleeping in class will cause you to do poorly on lecture tests. A. absolutely true B. absolutely false C. perhaps true 0
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17. An animal cell is characterized by A. a chitinous cell wall B. bacteria-like ribosomes floating free all about the cytoplasm C. a true nucleus, mobility, and heterotrophy 0 D. all of the above
18. A triangular shaped population pyramid with a wide base indicates a population A. like that here in the US B. that is in decline C. that is growing rapidly 0 D. that is steady
Answer questions 19 & 20 based upon the graph shown below.
[pic]
19. If 25% of the landscape area is used for human settlement, what % of the original species will remain according to this curve? A. 25% B. 75% C. 98% 0 D. 60%
20. If the total number of species present in the original area was 1000, and 25% of the landscape is preserved, then the number of species now would be: A. about 600 0 B. about 60 C. about 25% D. about 25 E. about 250
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21. Which of the following is a characteristic of most members of the Plantae? A. single-celled organisms that do not have a nucleus B. multicellular organisms that are heterotrophs C. organisms that play an important role in decomposition D. single-celled organisms exhibiting alternation of generations E. multicellular, photosynthetic, and immobile 0
22. If the “gold standard” design of a scientific experiment is not available: A. use the well known silver standard B. do a correlation study 0 C. do not pursue that hypothesis D. be sure to use a well-biased experiment
23. A website publication may be: A. evaluated by others in the same field, so it is also secondary literature B. peer literature, and should be taken at face value C. primary literature, but likely is not peer reviewed 0 D. all of the above
24. A model organism: A. always benefits from the experiment B. is from a different Domain C. is a different species 0 D. can not have chloroplasts
25. Phylogenies are created based on the principle that all species descending from a recent common ancestor: A. will have shorter connecting branches than those from a far distant ancestor. 0 B. should be identical C. should be found as fossils D. should be no more similar than species who are less closely related.
26. A country that is in demographic transition has a ___ birth rate and a ___ death rate. A. high, high B. high, low 0 C. low, low D. low, high
27. An example of a density dependent factor is: A. the amount of rainfall B. the spread of disease 0 C. the amount of sunshine D. all of the above
28. Organisms feeding on just a few sources of food would display ___ distribution. A. clumped 0 B. uniform C. random
29. The “extremophiles” belong to what grouping? A. Antheridia B. Animalia C. Archegonia D. Archaea 0
30. The average in a statistical analysis is referred to as: A. the control B. the negative C. the confidence integer D. the mean 0
31. On a second Mark and Capture event, 60 seals are caught, with 30 of them already having tags. In the initial capture, 100 seals were caught. What is the size of the entire seal population? A. 30 B. 60 C. 100 D. 200 0 E. 1000
32. The relationship between the acacia tree and the ants that live within it would best be described as: A. predation B. parasitism C. mutualism 0 D. interspecific competition
33. Which of the following is/are true about ecosystems? A. an ecosystem includes the nonliving components of the environment. B. The bacteria and fungi are responsible for recycling the mineral nutrients within an ecosystem. C. Plants, photosynthetic bacteria, and photosynthetic protists are the ultimate sources of food in ecosystems. D. A “food chain” is not an accurate term. E. All the above are true. 0
34. According to the biological species concept, individuals belong to the same species if: A. they look alike B. they both have fossils C. their DNA has many differences D. none of the above 0
35. You arrive back in the US after having visited abroad. Customs stops the person in front of you and confiscates the fruit basket this person is bringing home. Being the knowledgeable person that you are, you calmly explain to your enraged fellow traveler that the reason for the detainment is that the fruit basket may be: A. carrying endangered fruit. B. carrying an exotic species that could damage North American ecosystems. 0 C. contaminated with species native to North America.
36. The limit to the number of trophic levels is dictated by: A. estuaries B. artificial eutrophication C. the fact that energy is lost as heat 0 D. co-organization of prokaryotes
37. Habitat fragmentation: A. favors exotic species B. favors easier movement for large predators C. decreases the biodiversity. 0 D. increases the availability of ecotones
38. A population of aphids inhabits a large rose bush. Over time the population increases very rapidly, until new aphids can no longer find enough places on the plant to feed. Some time later, the first hard frost hits. Which curve fits the above description? A. B. C. D.
39. If the confidence intervals have a high degree of overlap, the experimenter may reasonably: A. get his article published immediately. B. conclude his theory is true. C. have confidence in his hypothesis. 0 D. discard his ideas and find a new subject to study. E. re-evaluate his experimental set-up.
40. Mary-Anne wonders about a connection between her baby eating strained peas and diaper rash. She designs a scientific experiment to explore this. What would be a good negative control? A. starve the baby B. try different diapers C. don’t use diapers D. use a new brand of baby wipe E. don’t feed the baby peas 0
41. The Endosymbiont Theory explains: A. why plants can’t fly B. why some organelles in plants resemble bacteria 0 C. why animals actually do possess chlorophyll.
42-43. Label the graph at right with the appropriate variables’ headings. An employee for Suave thinks that peanut butter adds shine to human hair. He adds increasing amounts of peanut butter into shampoo bottles and then tests the washed hair for the intensity of the shine.
A. peanut butter amount 0 B. shine intensity 0 C. no peanut butter D. don’t wash hair E. using a different shampoo
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Percent total landscape area preserved
Percent of species originally found in a given area
50
100
50
100
#42
#43 