BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
12th Edition
ISBN: 9781264058167
Author: Raven
Publisher: MCG CUSTOM
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Chapter 43.1, Problem 2LO
Summary Introduction
To explain: The process of transmission of sensory information from sensory neurons to the CNS.
Introduction: Sensory receptors are structures specialized for the identification of a stimulus. The two common categories of sensory receptors are interoceptors and exteroceptors. Interoceptors receive several stimuli that originate from within an animal body. They sense changes in physiology and position of the body. Exteroceptors detect stimuli, involved in special and general senses, outside the body. Sensory receptors like the senses of taste, hearing, smell, vision, and touch provide such information.
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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 43 Solutions
BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
Ch. 43.1 - Prob. 1LOCh. 43.1 - Prob. 2LOCh. 43.1 - Describe how gated ion channels work.Ch. 43.2 - Prob. 1LOCh. 43.2 - Describe the function of these receptors.Ch. 43.2 - Describe the relationship between thermoreceptors...Ch. 43.3 - Prob. 1LOCh. 43.3 - Prob. 2LOCh. 43.4 - Prob. 1LOCh. 43.4 - Prob. 2LO
Ch. 43.4 - Prob. 3LOCh. 43.5 - Prob. 1LOCh. 43.5 - Prob. 2LOCh. 43.6 - Prob. 1LOCh. 43.6 - Prob. 2LOCh. 43.6 - Prob. 3LOCh. 43.7 - Prob. 1LOCh. 43 - Prob. 1DACh. 43 - Prob. 1IQCh. 43 - Prob. 2IQCh. 43 - Prob. 3IQCh. 43 - Which of these is NOT a method by which sensory...Ch. 43 - Which of the following correctly lists the steps...Ch. 43 - All sensory receptors are able to initiate nerve...Ch. 43 - In the fairy tale, Sleeping Beauty fell asleep...Ch. 43 - The ear detects sound by the movement of a. the...Ch. 43 - Hair cells in the vestibular apparatus of...Ch. 43 - ________ is the photopigment contained within both...Ch. 43 - Which of the following is NOT a method used by...Ch. 43 - Prob. 9UCh. 43 - Prob. 10UCh. 43 - What do the sensory systems of annelids, mollusks,...Ch. 43 - Animals can more easily tell the direction of a...Ch. 43 - Some birds have broader color perception than...Ch. 43 - The ability of some insects, birds, and lizards to...Ch. 43 - Prob. 1SCh. 43 - The function of the vertebrate eye is unusual...Ch. 43 - How would the otolith organs of an astronaut...Ch. 43 - Prob. 4S
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