Pearson eText Biology: Science for Life with Physiology -- Instant Access (Pearson+)
6th Edition
ISBN: 9780135214114
Author: Colleen Belk, Virginia Maier
Publisher: PEARSON+
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Chapter 1, Problem 2AAATB
In an experiment examining vitamin C as a cold treatment, students with cold symptoms who visited the campus medical center either received vitamin C or were treated with over-the-counter drugs. Students then reported on the length and severity of their colds. Both the students and the clinic health providers knew which treatment students were receiving. This study indicated that vitamin C significantly reduced the length and severity of colds. Which factors make this result somewhat unreliable?
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A researcher is conducting an experiment testing whether a new pharmaceutical drug is able to effectively treat heartburn and has a physician assisting with the study involving volunteers who experience chronic heartburn. Which of the following descriptions most closely describes the control used in this study?
Show answer choices
The researcher has organized the patients into 4 groups, where patients either take 1 dose of the drug, 2 doses of the drug, 1 dose of the placebo, or 2 doses of the placebo.
The physician asks patients to rate their heartburn discomfort on a scale from 1-10 every 5 minutes up to an hour.
The physician and patients both do not know if they are receiving the actual drug or a placebo.
The placebo pill contains just compressed sugar and no active drug.
Patients are randomly selected and placed into the four categories.
Consider the following scenario:
A group of five treasure hunters have been hired to retrieve some artefacts believed to be in an abandoned castle in an environment similar to the Arctic tundra (this is a quasi-fantasy land where disparate climates can co-exist in ways they can’t in reality, but everyone is human and has human physiology). Their expedition is happening in winter, and the group set out each carrying a pack of supplies including tents, sleeping gear, and food for either 3 well-fed days or up to 8 days with rationing (approximately 30kg each).
The treasure hunters travel on foot to get to the castle through lands where there are predators such as wolves and bears. They have two options in terms of speed of travel: slow (7 days to castle), and fast (4 days to castle).
1) As an advisor to the group, which speed would you say they should travel? Note – neither speed is wrong however your answer must justify your choice in terms of physiology.
Once the group get to the…
Vitamin C has been shown to reduce the incidence of the common cold?
True False
Chapter 1 Solutions
Pearson eText Biology: Science for Life with Physiology -- Instant Access (Pearson+)
Ch. 1 - Add labels to the figure that follows, which...Ch. 1 - Which of the following is an example of inductive...Ch. 1 - A scientific hypothesis is ___________. an...Ch. 1 - How is a scientific theory different from a...Ch. 1 - Prob. 5LTBCh. 1 - If I perform a hypothesis test in which I...Ch. 1 - Prob. 7LTBCh. 1 - Prob. 8LTBCh. 1 - A relationship between two factors, for instance,...Ch. 1 - A primary source of scientific results is...
Ch. 1 - Prob. 11LTBCh. 1 - What features of the story on milk chocolate and...Ch. 1 - Prob. 1AAATBCh. 1 - In an experiment examining vitamin C as a cold...Ch. 1 - Prob. 3AAATBCh. 1 - Prob. 1GFOCh. 1 - Much of the research on common cold prevention and...Ch. 1 - The science that you learned in this chapter has...
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