Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 34, Problem 32CTQ
The gut microbiome (the bacterial colonies in the intestines) have become a popular area of study in biomedical research. How could varying gut microbiomes impact a person’s nutrition?
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The human intestinal tract is home to a vast, diverse microbial community. The bacteria that comprise this microbial community serve a number of important, beneficial functions. However, some bacterial species have been suggested to play a role in certain forms of cancer. One such bacteria is Fusobacterium nucleatum (i.e., F. nucleatum).
Investigators wishing to study the role of F. nucleatum in colorectal cancer developed a new assay for detecting these bacteria in tumor tissue. In controlled experiments, the test was highly sensitive in detecting F. nucleatum and also had high specificity. To examine consistency in their test findings, the investigators also conducted repeat tests in 50 tissue samples. From these repeat tests, the investigators observed that the overall number of samples in which F. nucleatum was detected was almost identical (10 out of 50 on the first test vs. 11 out of 50 on the repeat test); for 9 samples, F. nucleatum was detected on both the initial and the…
We have prokaryotes in our intestines? What do they do for us? What do we have to do for them?
Chapter 34 Solutions
Biology 2e
Ch. 34 - Figure 34.11 Which of the following statements...Ch. 34 - Figure 34.12 Which of the following statements...Ch. 34 - Figure 34.19 Which of the following statements...Ch. 34 - Which of the following is a pseudo-ruminant? cow...Ch. 34 - Which of the following statements is untrue?...Ch. 34 - The acidic nature of chyme is neutralized by...Ch. 34 - The digestive juices from the liver are delivered...Ch. 34 - A scientist dissects a new species of animal. If...Ch. 34 - Which of the following statements is not true?...Ch. 34 - Which of the following is a water-soluble vitamin?...
Ch. 34 - What is the primary fuel for the body?...Ch. 34 - Excess glucose is stored as fat glucagon glycogen...Ch. 34 - Many distance runners “carb load” the day before a...Ch. 34 - Where does the majority of protein digestion take...Ch. 34 - Lipases are enzymes that breakdown disaccharides...Ch. 34 - Which of the following conditions is most likely...Ch. 34 - Which hormone controls the release of bile from...Ch. 34 - Which hormone stops acid secretion in the stomach?...Ch. 34 - In the famous conditioning experiment, Pavlov...Ch. 34 - How does the polygastric digestive system aid in...Ch. 34 - How do birds digest their food in the absence of...Ch. 34 - What is the role of the accessory organs in...Ch. 34 - Explain how the villi and microvilli aid in...Ch. 34 - Name two components of the digestive system that...Ch. 34 - What are essential nutrients?Ch. 34 - What is the role of minerals in maintaining good...Ch. 34 - Discuss why obesity is agrowing epidemic.Ch. 34 - There are several nations where mal nourishment is...Ch. 34 - Generally describe bow a piece of bread can power...Ch. 34 - In the 1990s fat-free foods became popular among...Ch. 34 - Explain why some dietary lipid is a necessary part...Ch. 34 - The gut microbiome (the bacterial colonies in the...Ch. 34 - Many mammals become ill if they drink milk as...Ch. 34 - Describe how hormones regulate digestionCh. 34 - Describe one or more scenarios where loss of...Ch. 34 - A scientist is studying a model that has a...
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