Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Question
Chapter 21, Problem 18BS
Summary Introduction
To provide: A mock script with questions and responses interviewing different experts as to why the woman died after drinking 6 liters of water in 3 hours.
Concept introduction: Homeostasis is a process of maintaining the body condition, where the internal environment is maintained in a constant state even if there is a significant change in the external environment. The body has several mechanisms to maintain the homeostasis. One important system is maintaining a threshold level for all molecules in the body. Similarly, a threshold level of water has to be maintained in the body. Concentration of water beyond this threshold level can lead to adverse effects.
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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
Campbell Essential Biology with Physiology (6th Edition)
Ch. 21 - Which is likely to be a more common cancer in an...Ch. 21 - Prob. 2SQCh. 21 - Prob. 3SQCh. 21 - Prob. 4SQCh. 21 - State whether each statement below is an example...Ch. 21 - While visiting a farm on a hot summer day, you see...Ch. 21 - Prob. 7SQCh. 21 - Prob. 8SQCh. 21 - What happens to most of the water that passes from...Ch. 21 - Explain the similarities between how your body...
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