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Chapter 22: Problem 76

if you suddenly and dramatically changed your diet, how might this affect the diversity of prokaryotic species that live in your intestine? a. The diversity would not get altered and would remain the same. b. Species abundance and relative distribution may increase. c. Species abundance and relative distribution may get affected. d. Species abundance and relative distribution may decrease

Short Answer

Expert verified
Option c: Species abundance and relative distribution may get affected.

Step by step solution

01

Understand the Question

The question asks about the effect of a dramatic change in diet on the diversity of prokaryotic species in the intestine.
02

Consider the Nature of Prokaryotic Diversity

Prokaryotic diversity in the intestine is influenced by diet because different foods provide different nutrients and conditions that can support or hinder various species.
03

Evaluate Each Option

Option a suggests no change, which is unlikely because diet directly affects gut conditions. Option b suggests an increase in species abundance and relative distribution, but it's more likely that the disruption from a sudden diet change would initially destabilize populations. Option c acknowledges that species abundance and distribution may change, which aligns with how ecosystems generally react to significant environmental changes. Option d suggests a decrease, which could happen, but it's overly simplistic as some species may thrive while others diminish.
04

Choose the Best Answer

Given that sudden dietary changes alter the environmental conditions in the gut, it is reasonable to expect that the diversity of prokaryotic species would be affected. Therefore, option c is the most accurate as it encompasses the possibility of changes in abundance and distribution.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Prokaryotic Diversity
Prokaryotic diversity refers to the variety of prokaryotic organisms, mainly bacteria, that exist in different environments. In the human gut, this diversity is crucial for various functions such as digestion and immune system support. There are thousands of different prokaryotic species in the human intestine, each playing a unique role.
Changes in diet can have a significant impact on prokaryotic diversity because different foods provide different nutrients and conditions. For example:
  • A high-fiber diet promotes the growth of certain bacterial species that can digest complex carbohydrates.
  • A high-fat diet might favor bacteria that can metabolize fats but can reduce overall species diversity.
Understanding prokaryotic diversity helps us comprehend how dietary changes can affect our gut health and, consequently, our overall well-being.
Gut Microbiome
The gut microbiome is the collection of all the microorganisms, including bacteria, fungi, viruses, and their genetic material, living in our intestines. This microbiome plays an essential role in digestion, nutrient absorption, and immune system functioning.
Different individuals have unique gut microbiomes influenced by factors like genetics, environment, and most notably, diet.
  • A diverse gut microbiome is generally associated with better health outcomes.
  • Less diversity in the gut microbiome is often linked to conditions such as obesity, diabetes, and inflammatory bowel diseases.
Because the gut microbiome is so dynamic, significant changes in diet can rapidly alter the composition and functionality of these microbial communities.
Diet and Microbiota
Diet is one of the most critical factors influencing the gut microbiota. The types of food we consume provide nutrients that promote or inhibit the growth of different bacterial species. Here are some keys points:
  • Dietary fibers from fruits, vegetables, and whole grains are broken down by gut bacteria into short-chain fatty acids, which are beneficial for gut health.
  • High-fat and high-sugar diets have been shown to reduce microbial diversity, potentially leading to an imbalance in the gut ecosystem.
  • Probiotic-rich foods, like yogurt and fermented products, can introduce beneficial bacteria into the gut, supporting a healthy microbiome.
Sudden and dramatic changes in diet can disrupt the stable ecosystem of the gut, leading to decreased prokaryotic diversity in the short term. Over time, the gut microbiota may adapt to the new diet, but the initial disruption can impact digestion and overall health.

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Most popular questions from this chapter

A primary role of many prokaryotes in the carbon cycle is that of a. producers b. decomposers c. fixers d. synthesizers

Which of the statements about the loci of biofilm- related disease is false? a. Biofilms are related to foodborne illnesses because they colonize food surfaces and food- processing equipment. b. In healthcare environments, biofilms grow on ventilators, shunts, and other medical equipment. c. Biofilms tend to colonize medical devices such as prostheses, contact lenses, and catheters. d. Biofilms form in open wounds, burned tissue, or internal medical devices such as pacemakers.

Which statement best explains which organisms need nitrogen fixation and why? a. Prokaryotes cannot use gaseous nitrogen to synthesize macromolecules, so it must be converted into ammonia. b. Prokaryotes cannot use ammonia to synthesize macromolecules, so it must be converted into gaseous nitrogen. c. Eukaryotes cannot use ammonia to synthesize macromolecules, so it must be converted into gaseous nitrogen. d. Eukaryotes cannot use gaseous nitrogen to synthesize macromolecules, so it must be converted into ammonia.

What was the Plague of Athens? What is the modern distribution of this disease? a. The Plague of Athens was a disease caused by Yersinia pestis that killed one-quarter of Athenian troops in 430 \(\mathrm{BC}\) . Between 10 and 15 million cases of typhoid fever occur today, resulting in over \(10,000\) deaths annually. b. The Plague of Athens was a disease caused by Salmonella entericaserovar typhi that killed one- quarter of Athenian troops in 430 \(\mathrm{BC}\) . Between 5 and 10 million cases of typhoid fever occur today, resulting in over \(20,000\) deaths annually. c. The Plague of Athens was a disease caused by Yersinia pestis that killed one-quarter of Athenian troops in 430 \(\mathrm{BC}\) . Between 16 and 33 million cases of typhoid fever occur today, resulting in over \(200,000\) deaths annually. d. The Plague of Athens was a disease caused by Salmonella entericaserovar typhi that killed one- quarter of Athenian troops in 430 \(\mathrm{BC}\) . Between 16 and 33 million cases of typhoid fever occur today, resulting in over \(200,000\) deaths annually.

Which statement about diseases is false? a. An epidemic is a disease that occurs in a high number of individuals in a population at a time. b. A pandemic is a widespread, usually worldwide, epidemic. c. An endemic disease is a disease that is constantly present, usually at high incidence, in a population. d. An emerging disease is a disease that has appeared in a population for the first time.
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