Exhibit 1-1
A scientist randomly divided a group of 100 lab rats into two groups of 50. One group was fed regular rat
chow while the other was fed the same amount of rat chow with added DDT. Both groups were housed in
the same room with the same environmental conditions. At the end of the experiment, rats were weighed
and the mean difference calculated.
28. Refer to the accompanying narrative. What variable or variables were manipulated by the scientist?
a. DDT only
b. temperature only
c. weight differences only
d. both DDT and weight differences
e. both temperature and weight differences
ANSWER: a
POINTS: 1
REFERENCES: Section 1.5 How does science work?
LEARNING OBJECTIVES: BCA.SES.1.5.3 - Using a suitable example, distinguish between dependent
and independent variables.
KEYWORDS: Bloom's: Apply | Analyze
29. Refer to the accompanying narrative. What dependent variable was measured?
a. DDT
b. temperature
c. weight
d. amount of food
e. day length
ANSWER: c
POINTS: 1
REFERENCES: Section 1.5 How does science work?
LEARNING OBJECTIVES: BCA.SES.1.5.3 - Using a suitable example, distinguish between dependent
and independent variables.
KEYWORDS: Bloom's: Apply
30. In order to reduce bias, scientists usually prefer experiments that lead to what kind of results?
a. ambiguous
b. imprecise
c. quantitative
d. qualitative
e. subjective
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, Test Bank For Biology: Concepts and Applications 10th Edition by Cecie Starr, Christine Evers, Lisa Starr
ANSWER: c
REFERENCES: Section 1.7 What are some potential pitfalls in scientific inquiry?
LEARNING OBJECTIVES: BCA.SES.1.5 - Explain the scientific method.
KEYWORDS: Bloom's: Understand
31. Suppose that in an experiment, different results are obtained from a subset than the results obtained
from the whole. What term would best explain this?
a. probability
b. trend
c. variable
d. statistically significant
e. sampling error
ANSWER: e
POINTS: 1
REFERENCES: Section 1.7 What are some potential pitfalls in scientific inquiry?
LEARNING OBJECTIVES: BCA.SES.1.7.2 - How can sampling error be minimized?
KEYWORDS: Bloom's: Understand
NOTES: Modified
32. An experimenter surveyed one-half acre of a desert preserve and found three cactus wren nests.
Assuming that the habitat is fairly uniform, how many nests would he expect to be in the entire 200-acre
preserve?
a. 6
b. 200
c. 600
d. 1200
e. 6000
ANSWER: d
POINTS: 1
REFERENCES: Section 1.7 What are some potential pitfalls in scientific inquiry?
LEARNING OBJECTIVES: BCA.SES.1.7.3 - When are experimental results said to be statistically
significant?
KEYWORDS: Bloom's: Apply
33. An experimental result that is statistically significant is:
a. likely to occur by chance alone
b. unlikely to occur by chance alone
c. scientifically significant or important
d. the result of an experiment with only one variable
e. influenced by sampling error
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, Test Bank For Biology: Concepts and Applications 10th Edition by Cecie Starr, Christine Evers, Lisa Starr
ANSWER: b
POINTS: 1
REFERENCES: Section 1.7 What are some potential pitfalls in scientific inquiry?
LEARNING OBJECTIVES: BCA.SES.1.7.3 - When are experimental results said to be statistically
significant?
KEYWORDS: Bloom's: Understand
34. A hypothesis that has been repeatedly and rigorously tested and supported is known as a:
a. model
b. testable prediction
c. scientific method
d. scientific theory
e. result
ANSWER: d
POINTS: 1
REFERENCES: Section 1.8 What is a theory?
LEARNING OBJECTIVES: BCA.SES.1.8.1 - When does a hypothesis become a scientific theory?
KEYWORDS: Bloom's: Understand
35. Which statement could be considered a scientific theory?
a. Beauty pageant contestants are becoming increasingly more beautiful.
b. Chemistry and physics are more exact sciences than biology.
c. Change occurs in the inherited traits of a population over generations.
d. The growth of a plant is faster in a growth chamber than in a greenhouse.
e. Leaves bend toward the light because they know light is needed to grow.
ANSWER: c
POINTS: 1
REFERENCES: Section 1.8 What is a theory?
LEARNING OBJECTIVES: BCA.SES.1.8.3 - Explain how a scientific theory is different from a
speculation or a law of nature.
KEYWORDS: Bloom's: Apply
NOTES: Modified
36. is the transmission of DNA to offspring.
a. Reproduction
b. Development
c. Homeostasis
d. Inheritance
e. Differentiation
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, Test Bank For Biology: Concepts and Applications 10th Edition by Cecie Starr, Christine Evers, Lisa Starr
ANSWER: d
POINTS: 1
REFERENCES: Section 1.2 How are all living things alike?
LEARNING OBJECTIVES: BCA.SES.1.2.4 - Explain how DNA forms the basis for similarities and
differences between organisms.
NOTES: Modified
37. Populations within California's Antelope Valley interact with their physical environment (e.g.,
sunlight and water) to sustain life. Which level of life's organization is appropriate for this scenario?
a. population
b. community
c. biosphere
d. ecosystem
e. organism
ANSWER: d
POINTS: 1
REFERENCES: Section 1.1 How do living things differ from non-living things?
LEARNING OBJECTIVES: BCA.SES.1.1.2 - Using suitable examples, describe the successive levels of
organization in living things from atoms to the biosphere.
KEYWORDS: Bloom's: Apply
NOTES: New
38. Plants use energy from the sun to produce nutrients. Plants are therefore:
a. consumers
b. reproducers
c. producers
d. decomposers
e. developers
ANSWER: c
POINTS: 1
REFERENCES: Section 1.2 How are all living things alike?
LEARNING OBJECTIVES: BCA.SES.1.2.1 - Distinguish between producers and consumers.
KEYWORDS: Bloom's: Understand
NOTES: New
39. Grass growing in a field is eaten by a deer. Later on, the deer dies and its body is decomposed, in part,
by bacteria. Which organism(s) are consumers?
a. grass only
b. deer only
c. bacteria only
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