EBK HUMAN PHYSIOLOGY
7th Edition
ISBN: 9780133983401
Author: Silverthorn
Publisher: YUZU
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Chapter 21, Problem 20RQ
Summary Introduction
To determine: The way in which H2 receptor acts as antagonists and secretion of gastric acids is inhibited by proton pump.
Introduction: Gastric acids are secreted by the gastric glands that are present deep in the of parietal cells. Acid secretions activate many enzymes in the stomach, and it also protects the body from microbes.
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19. On the diagram below
a. Label the three pictures as: DNA; polypeptide; or RNA.
b. Label the arrows as: translation or transcription/RNA processing.
c. Add the following details to the diagram.
Promoter region
TATA box
Transcription start site
Transcription terminator
Intron (A,B,C,D)
Exons (1,2,3,4,5)
Splice sites
5' cap
5' UTR (untranslated region)
3' poly A tail
3' UTR (untranslated region)
Translational start (AUG)
Translational stop (UGA, UAG, or UAA)
N and C ends of polypeptide
0000
Match the letter labels in the figure below to the terms. Some letter
labels are not used.
MNNNNNNIN
M
C
B
A
M
D
F
E
H
K
G
8
The diagram below illustrates a quorum sensing pathway from Staphylococcus aureus. Please answer the following questions.
1. Autoinduction is part of the quorum sensing system. Which promoter (P2 or P3) is critical for autoinduction?
2)This staphylococcus aureus grows on human wounds, causing severe infections. You would like to start a clinical trial to treat these wound infections. Please describe:
a) What molecule do you recommend for the trial. Why?
b) Your trial requires that Staphylococcus aureus be isolated from the wound and submitted to genome sequencing before admittance. Why? What are you testing for?
3) If a mutation arises where the Promoter P3 is constitutively active, how would that influence sensitivity to AIP? Please explain your rationale.
4) This pathway is sensitive to bacterial cell density. Describe two separate mutation that would render the pathway active independent of cell density. Briefly explain your rationale.
Mutation 1
Mutation 2
Chapter 21 Solutions
EBK HUMAN PHYSIOLOGY
Ch. 21 - Prob. 1CCCh. 21 - Prob. 2CCCh. 21 - Prob. 3CCCh. 21 - Define digestion. What is the difference between...Ch. 21 - Prob. 5CCCh. 21 - Draw a cell showing (1) an enzyme in a cytoplasmic...Ch. 21 - Prob. 7CCCh. 21 - Prob. 8CCCh. 21 - Prob. 9CCCh. 21 - Prob. 10CC
Ch. 21 - Prob. 11CCCh. 21 - Do bile salts digest triglycerides into...Ch. 21 - Prob. 13CCCh. 21 - Prob. 14CCCh. 21 - What activates pepsinogen, trypsinogen, and...Ch. 21 - Prob. 16CCCh. 21 - Match each of the following descriptions with the...Ch. 21 - Prob. 2RQCh. 21 - Prob. 3RQCh. 21 - Prob. 4RQCh. 21 - Prob. 5RQCh. 21 - Prob. 6RQCh. 21 - What purposes does motility serve in the...Ch. 21 - Prob. 8RQCh. 21 - Match each of the following cells with the...Ch. 21 - Prob. 10RQCh. 21 - Prob. 11RQCh. 21 - Prob. 12RQCh. 21 - Prob. 13RQCh. 21 - What role do paracrines play in digestion? Give...Ch. 21 - Prob. 15RQCh. 21 - Prob. 16RQCh. 21 - Prob. 17RQCh. 21 - Prob. 18RQCh. 21 - Prob. 19RQCh. 21 - Prob. 20RQCh. 21 - Prob. 21RQCh. 21 - Prob. 22RQCh. 21 - Mary Littlefeather arrives in her physicians...Ch. 21 - Using what you have learned about epithelial...Ch. 21 - Intestinal transport of the amino acid analog MIT...
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