MICROBIOLOGY: FUNDAMENTALS CONNECT AC
MICROBIOLOGY: FUNDAMENTALS CONNECT AC
3rd Edition
ISBN: 9781264669769
Author: Cowan
Publisher: MCG
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 14, Problem 1Q

Allergy and atopy might have evolved in human populations that have had a “sudden” decrease in

  1. a. vaccinations.
  2. b. exposure to vitamin D.
  3. c. exposure to helminth infections.
  4. d. intake of processed sugar.
Expert Solution & Answer
Check Mark
Summary Introduction

Introduction:

Allergy is type of hypersensitivity condition of the immune system generally in response to harmless substances present in the environment. These substances are termed as allergens. Allergic diseases include atopic dermatitis, food allergies, hay fever, and so many.

Answer to Problem 1Q

Correct answer:

Atopy and allergy might have evolved in human populations that have had a sudden decrease in exposure to helminth infections.

Therefore, option (c) is correct.

Option (c) is given as “exposure to helminth infections”.

Explanation of Solution

Justify reasons for the correct statement:

Atopy refers to chronic local allergies. Atopy and allergy evolved in human populations that had a sudden reduction in exposure to helminth infections. This is because the components that produce allergic response were known to defend against helminths and other human parasites.

Hence, option (b) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “vaccinations”.

Vaccinations were never given in huge amounts. It is not possible that a sudden reduction in vaccination might induce atopy and allergy. Hence, it is a wrong answer.

Option (c) is given as “exposure to vitamin D”.

Reduction in vitamin D is not associated with the development of allergies and atopy. Hence, it is a wrong answer.

Option (d) is given as “intake of processed sugar”.

Reduction in the intake of processed sugar did not induce atopy and allergy in human populations. Hence, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Allergy and atopy evolved in human populations that have had a sudden reduction in exposure to helminth infections.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
4. This question focuses on entrainment. a. What is entrainment? b. What environmental cues are involved in entrainment, and which one is most influential? c. Why is entrainment necessary? d. Assuming that a flash of darkness is an effective zeitgeber, what impact on circadian rhythms would you expect to result from an event such as the 2024 solar eclipse (assume it was viewed from Carbondale IL, where totality occurred at about 2 pm)? Explain your reasoning. You may wish to consult this phase response diagram. Phase Shift (Hours) Delay Zone Advance Zone Dawn Mid-day Dusk Night Dawn Time of Light Stimulus e. Finally, give a real-world example of how knowledge of circadian rhythms and entrainment has implications for human health and wellbeing or conservation biology. This example could be from your reading or from things discussed in class.
Generate one question that requires a Punnet Squre to solve the question. Then show how you calculate the possibilities of genotype and phenotype
Briefly state the physical meaning of the electrocapillary equation (Lippman equation).

Chapter 14 Solutions

MICROBIOLOGY: FUNDAMENTALS CONNECT AC

Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Basic Clinical Lab Competencies for Respiratory C...
Nursing
ISBN:9781285244662
Author:White
Publisher:Cengage
Text book image
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Text book image
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Text book image
Aquaculture Science
Biology
ISBN:9781133558347
Author:Parker
Publisher:Cengage
Text book image
Comprehensive Medical Assisting: Administrative a...
Nursing
ISBN:9781305964792
Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa
Publisher:Cengage Learning
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Immune System Diseases and Disorders; Author: Heather Davis;https://www.youtube.com/watch?v=3lIkxNv7MVI;License: Standard youtube license