Human Biology: Concepts and Current Issues
7th Edition
ISBN: 9780321821652
Author: Michael D. Johnson
Publisher: Benjamin Cummings
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Textbook Question
Chapter 9, Problem 6TY
Which of the following is a benefit of resident bacteria?
a. Resident bacteria cause the stomach to be acidic.
b. Resident bacteria produce antiviral compounds that prevent viral infections.
c. Resident bacteria can out-compete harmful bacteria and lower the incidence of infection.
d. Resident bacteria digest cellulose within the human digestive tract.
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Students have asked these similar questions
The main function of the mucus in the stomach is to _____.
a. trap and kill ingested microorganisms
b. enzymatically degrade complex nutrients
c. protect epithelial cells from the acidified environment
d. protect the microbiota from corrosive gastric juices
e. delay the digestive process to maximize absorption.
Which of the following best describe the function of goblet cells in the digestive tract?
A.
produce mucus that protects parts of the digestive organs from the effects of powerful enzymes needed for food digestion
B.
secrete buffers in order to keep the pH of the digestive tract close to neutral
C.
provide protection against invading bacteria and other disease-causing organisms that enter the digestive tract in food
D.
absorb nutrients from digested food and store them for future use
You have collected content from the small intestine and isolated various enzymes. Where do most of these enzymes originally come from?
a) Liver
b) Stomach
c) Duodenum (duodenum)
d) Colon (colon)
e) Pancreas (pancreas)
Chapter 9 Solutions
Human Biology: Concepts and Current Issues
Ch. 9 - Prob. 1QCCh. 9 - Prob. 2QCCh. 9 - Define the term pathogen and give some examples.Ch. 9 - Prob. 2CRCh. 9 - Prob. 3CRCh. 9 - Prob. 4CRCh. 9 - Prob. 5CRCh. 9 - Describe in general terms the distinction between...Ch. 9 - Describe the concept of an antigen and how it...Ch. 9 - Prob. 8CR
Ch. 9 - Prob. 9CRCh. 9 - Prob. 10CRCh. 9 - Prob. 1TYCh. 9 - Prob. 2TYCh. 9 - Prob. 3TYCh. 9 - Prob. 4TYCh. 9 - Prob. 5TYCh. 9 -
6. Which of the following is a benefit of...Ch. 9 - Prob. 7TYCh. 9 -
8. The following are steps in phagocytosis: (1)...Ch. 9 - Prob. 9TYCh. 9 - Prob. 10TYCh. 9 - Prob. 11TYCh. 9 - Prob. 12TYCh. 9 - Which of the following increases the likelihood of...Ch. 9 - Which of the following does not belong with the...Ch. 9 - Which of the following statements about HIV is...Ch. 9 - Prob. 1AWKCh. 9 - Prob. 2AWKCh. 9 -
3. Everyone knows that bacteria can cause...Ch. 9 - Prob. 4AWKCh. 9 - Prob. 5AWKCh. 9 - Why is it that most people get the chicken pox...Ch. 9 - The immune system is supposed to defend us from...
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