Biology: Science for Life with Physiology 5th Edition by Colleen Belk Test bank
B) Mr. Bromley is conducting a survey of weight loss for his professor. He asks each student in the study the same questions.
C) Ms. Bradley is an outside consultant who is conducting a health and wellness survey for a pharmaceutical company. She does not know the name of the company nor does she know the name of the drug being tested during the survey.
D) Dr. Postgate is analyzing biopsy samples from rats that have been given either a placebo or an experimental drug believed to reduce inflammation. Each sample is identified by a code number so that Dr. Postgate cannot tell which treatment the rats received.
Answer: A
Section: 1.2
Skill: Application/Analysis (Apply/Analyze)
Learning Outcome: 1.6
24) Which factor in an experiment can be manipulated?
A) bias
B) control
C) placebo
D) variable
Answer: D
Section: 1.2
Skill: Knowledge/Comprehension (Remember/Understand)
Learning Outcome: 1.5
25) Experimental subjects are given a pill to test its effectiveness on reducing the duration of a cold. How should the control group be treated?
A) Do nothing with the control group.
B) Give the control group two pills instead of one.
C) Give the control group a pill that does not affect the duration of colds.
D) Let the control group choose whether or not to take any pills.
Answer: C
Section: 1.2
Skill: Application (Apply)
Learning Outcome: 1.5
26) Which group would be the most effective control subjects in a test of an experimental treatment?
A) The control group should be a different age or gender than the experimental subjects.
B) The control group should be given different doses of the experimental treatment.
C) The control group should be kept well informed of what treatment they are getting.
D) The control group should have characteristics very similar to the experimental subjects.
Answer: D
Section: 1.2
Skill: Comprehension/Application (Understand/Apply)
Learning Outcome: 1.5
27) What is the purpose of double-blind experiments?
A) to ensure that the hypothesis is scientifically testable
B) to see if the experimental group responds differently than the control group
C) to help the subjects in an experiment understand the treatment they are receiving
D) to minimize the effects of human bias on the results
Answer: D
Section: 1.2
Skill: Comprehension/Application (Understand/Apply)
Learning Outcome: 1.6
28) Why are model organisms used to test hypotheses?
A) The hypotheses are likely to apply only to the model organism.
B) The hypotheses are potentially too dangerous to perform on human subjects.
C) Human subjects have already been tested.
D) The hypotheses have results that are always applicable to humans.
Answer: B
Section: 1.2
Skill: Application/Analysis (Apply/Analyze)
Learning Outcome: 1.7
29) It has been observed that people with relatively high stress levels get a relatively high number of colds. What would this be an example of?
A) correlation
B) experiment
C) variable
D) hypothesis
Answer: A
Section: 1.2
Skill: Comprehension/Application (Understand/Apply)
Learning Outcome: 1.7
30) There is a strong correlation between stress and susceptibility to colds. What does this mean?
A) Stress must directly cause susceptibility to colds.