Campbell Biology: Concepts and Connections
10th Edition
ISBN: 9780135269169
Author: Taylor
Publisher: PEARSON
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Chapter 22, Problem 12TYK
Summary Introduction
To explain:
The reason of CO being a deadly gas irrespective of the fact that it is a colorless, odorless gas found in furnace and automobile engine exhaust and cigarette smoke. CO binds to hemoglobin 210 times more tightly than does O2. CO also bonds with an electron transport protein and disrupts
Concept introduction:
Carbon monoxide is an odorless, tasteless and colorless gas with less density than air. It consists of one atom of carbon and one atom of oxygen connected with a triple bond with a molecular mass of
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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 22 Solutions
Campbell Biology: Concepts and Connections
Ch. 22 - Complete the following concept map to review some...Ch. 22 - Label the parts of the human respiratory system.Ch. 22 - Prob. 3TYKCh. 22 - Countercurrent gas exchange in the gills of a fish...Ch. 22 - Prob. 5TYKCh. 22 - Prob. 6TYKCh. 22 - Prob. 7TYKCh. 22 - Prob. 8TYKCh. 22 - Prob. 9TYKCh. 22 - What are two advantages of breathing air, compared...
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