EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Chapter 22, Problem 1COQ
Summary Introduction
To explain: The possible hypotheses for the formation of organic molecules for the first time.
Introduction: Organic molecules came into existence before the emergence of life on earth. There are many hypotheses that have been put forward to explain the formation of organic molecules on earth. Some of these hypotheses are reducing atmosphere hypotheses, extraterrestrial hypotheses, and Deep-Sea Vent hypotheses. All these hypotheses talk about how organic molecules were formed for the first time in an atmosphere that was totally different from today’s atmosphere.
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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
EBK BIOLOGY
Ch. 22.1 - Prob. 1CCCh. 22.1 - Prob. 2CCCh. 22.1 - Prob. 3CCCh. 22.1 - Look back at Figure 3.11. What is the...Ch. 22.1 - Prob. 4CCCh. 22.1 - Prob. 1EQCh. 22.1 - Prob. 2EQCh. 22.1 - Prob. 3EQCh. 22.2 - Prob. 1CCCh. 22.2 - Prob. 2CC
Ch. 22.3 - Prob. 1BCCh. 22.3 - Prob. 1CCCh. 22.3 - Prob. 2BCCh. 22 - Prob. 1TYCh. 22 - Prob. 2TYCh. 22 - Prob. 3TYCh. 22 - Prob. 4TYCh. 22 - Prob. 5TYCh. 22 - Prob. 6TYCh. 22 - The endosymbiosis hypothesis explaining the...Ch. 22 - Which of the following explanations of...Ch. 22 - Prob. 9TYCh. 22 - Which of the following statements regarding modern...Ch. 22 - Prob. 1CQCh. 22 - Prob. 2CQCh. 22 - Core Concept: Evolution Describe two examples in...Ch. 22 - Prob. 1COQCh. 22 - Prob. 2COQ
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