Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 39, Problem 12PIAT
Summary Introduction
To review:
The mainland or island tortoise requires more food per gram of their body mass.
Introduction:
Gigantism refers to a biological phenomenon where the size of the organism isolated on an island increases rapidly as compared to the mainland relatives. This gigantism is an evolutionary trend due to less predation and/or competition on islands.
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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 39 Solutions
Biological Science (6th Edition)
Ch. 39 - Prob. 1TYKCh. 39 - 2. Which of the following examples best describes...Ch. 39 - As an animal gets larger, which of the following...Ch. 39 - Prob. 4TYKCh. 39 - 5. For each of the following, explain how...Ch. 39 - Prob. 6TYUCh. 39 - Explainwhymostendotherms are homeothermic and...Ch. 39 - Prob. 8TYUCh. 39 - Prob. 9TYPSSCh. 39 - 10. The dinosaur Apatosaurus (Brontosaurus) is one...
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