Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 40, Problem 12PIAT
Summary Introduction
To analyze:
Whether the data shown in the graph support the hypothesis that aluminum interferes with osmoregulation in freshwater fish or not.
Introduction:
The control of solute concentration and water, for maintaining the osmotic pressure in the body fluids in an organism is called osmoregulation. When there is an increase in the concentration of any of the solute or decrease in the water amount in the cell, the osmoregulation is disturbed. Scientists exposed freshwater bony fish (Prochilodus lineatus) exposed to water with high aluminum level and another set of fish that was exposed to water with normal aluminum levels (control). The results of the data are shown in graph below:
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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 40 Solutions
Biological Science (7th Edition)
Ch. 40 - Prob. 2TYKCh. 40 - 3. What effect does antidiuretic hormone (ADH)...Ch. 40 - Fill in the blank: In Gila monsters, the organ in...Ch. 40 - Prob. 5TYUCh. 40 - Prob. 6TYUCh. 40 - Prob. 7TYUCh. 40 - 8. Scientists have noted that marine invertebrates...Ch. 40 - Prob. 9TYPSSCh. 40 - Prob. 10TYPSSCh. 40 - Prob. 11PIAT
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