BIOLOGY 100 EXAM 1 EKDALE SDSU
PRACTICE COLLECTION 2026
COMPLETE REVIEW VERIFIED PASS
◉ A scientific theory is:
Answer: an explanation supported by a very large amount of
experimental evidence
◉ Suppose that a botanist is interested in the effect of light on plants. In
an experiment she conducts, 50 individuals of a single species of
flowering plant are grown for 60 days under different lengths of artificial
daylight. The plant species has flowers that can be either white or pink,
depending on the genetics of the parent plants. The amount of water and
fertilizer provided to each plant is constant. At the end of the
experiment, the size of each leaf of every plant is measured. The
dependent variable in this experiment is the:
Answer: leaf's size
◉ A statistically significant result is one that:
Answer: is unlikely due to chance
◉ Results from one test of a new drug are found to be statistically
significant; therefore, the hypothesis:
Answer: should be tested again
◉ The most trustworthy source of scientific information is:
, Answer: peer-reviewed research publications
◉ A news report on CNN that describes recently published research on a
new treatment for colds is an example of a(n):
Answer: secondary source
◉ Which of the following is a sign that scientific information on a
website may be unreliable?
Answer: The site is set up to allow you to buy the product being
described
◉ Which of the following situations has the greatest potential for
observer bias in an experimental process?
Answer: Dr. Jones is evaluating cancer patients for their responses to a
new therapeutic drug. She knows which patients are receiving the
placebo and which are receiving the drug
◉ Deductive reasoning is used to make ________ based on a
hypothesis.
Answer: predictions
◉ When you look at the spacing of humans on a global level, the
population follows a(n) ________ distribution.
Answer: clumped
PRACTICE COLLECTION 2026
COMPLETE REVIEW VERIFIED PASS
◉ A scientific theory is:
Answer: an explanation supported by a very large amount of
experimental evidence
◉ Suppose that a botanist is interested in the effect of light on plants. In
an experiment she conducts, 50 individuals of a single species of
flowering plant are grown for 60 days under different lengths of artificial
daylight. The plant species has flowers that can be either white or pink,
depending on the genetics of the parent plants. The amount of water and
fertilizer provided to each plant is constant. At the end of the
experiment, the size of each leaf of every plant is measured. The
dependent variable in this experiment is the:
Answer: leaf's size
◉ A statistically significant result is one that:
Answer: is unlikely due to chance
◉ Results from one test of a new drug are found to be statistically
significant; therefore, the hypothesis:
Answer: should be tested again
◉ The most trustworthy source of scientific information is:
, Answer: peer-reviewed research publications
◉ A news report on CNN that describes recently published research on a
new treatment for colds is an example of a(n):
Answer: secondary source
◉ Which of the following is a sign that scientific information on a
website may be unreliable?
Answer: The site is set up to allow you to buy the product being
described
◉ Which of the following situations has the greatest potential for
observer bias in an experimental process?
Answer: Dr. Jones is evaluating cancer patients for their responses to a
new therapeutic drug. She knows which patients are receiving the
placebo and which are receiving the drug
◉ Deductive reasoning is used to make ________ based on a
hypothesis.
Answer: predictions
◉ When you look at the spacing of humans on a global level, the
population follows a(n) ________ distribution.
Answer: clumped
