EBK BIOLOGY
11th Edition
ISBN: 8220102797352
Author: Raven
Publisher: YUZU
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Chapter 47, Problem 6U
Summary Introduction
Introduction:
Digestion happens physically and chemically. In physical digestion the food is churned and mixed and pushed further into the digestive tract. In chemical digestion the food is broken down into its constituent parts that are absorbable. Different enzymes are required for the chemical digestion. Accessory glands, like liver and pancreas secrete these enzymes.
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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 47 Solutions
EBK BIOLOGY
Ch. 47 - How is the digestion of fats different from that...Ch. 47 - Although the stomach is normally thought of as the...Ch. 47 - After being absorbed through the intestinal...Ch. 47 - Which of these pairings is incorrect? a. Fat...Ch. 47 - Intestinal microorganisms aid digestion and...Ch. 47 - Prob. 6UCh. 47 - Which of the following represents the action of...Ch. 47 - Prob. 1ACh. 47 - The primary function of the large intestine is to...Ch. 47 - Inactive forms of some molecules are secreted a....
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