EBK BIOLOGY
11th Edition
ISBN: 8220101459800
Author: Byers
Publisher: PEARSON
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Chapter 20, Problem 4RQ
Summary Introduction
To review:
Endospore and its function.
Introduction:
Prokaryotes are found in every corner of the world. Their ability to adapt in different environments helps them to live and flourish in extreme conditions. When the conditions go beyond their abilities to adapt and survive, bacteria resort to other tactics to ensure their survival. One such tactic is the development of an endospore.
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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 20 Solutions
EBK BIOLOGY
Ch. 20 - The name of the process by which DNA is...Ch. 20 - Prob. 2MCCh. 20 - Prob. 3MCCh. 20 - 4. Viruses
a. are usually...Ch. 20 - Prob. 5MCCh. 20 - _______have peptidoglycan in their _____, but____...Ch. 20 - Prob. 2FTBCh. 20 - 3. Many prokaryotes use _____ to move about. Some...Ch. 20 - _____ bacteria inhabit environments that lack...Ch. 20 - 5. Prokaryotes reproduce by _____and may sometimes...
Ch. 20 - 6. The plant nutrient ammonium is produced by___...Ch. 20 - Prob. 7FTBCh. 20 - A virus consists of a molecule of ____or _____...Ch. 20 - Describe some of the ways in which prokaryotes...Ch. 20 - What are nitrogen-fixing bacteria, and what role...Ch. 20 - Describe some of the extreme environments in which...Ch. 20 - Prob. 4RQCh. 20 - What is conjugation? What role do plasmids play in...Ch. 20 - 6. Why are prokaryotes especially useful in...Ch. 20 - Describe the structure of a typical virus. How do...Ch. 20 - Describe some examples of how prokaryotes are...Ch. 20 - How do archaea and bacteria differ? How do...Ch. 20 - Prob. 1ACCh. 20 - Before the discovery of prions, many (perhaps...
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Prokaryotic vs. Eukaryotic Cells (Updated); Author: Amoeba Sisters;https://www.youtube.com/watch?v=Pxujitlv8wc;License: Standard youtube license