Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 23.1, Problem 1TQ
Summary Introduction
To review:
The growth of anaerobic microorganisms on the skin or in the mouth.
Introduction:
Various parts of the human body are exposed to the outer environment and remain in contact with several biotic agents that may grow over the exposed body regions. The mouth and the skin are constantly exposed to air and yet there is an unequal mixture of both aerobic and anaerobic bacteria that reside in both these areas. The colonization and distribution of the type of bacteria depend upon the physical part of the mouth and skin.
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What experiment could you do to see if the maternal gene, bicoid, is sufficient to form anterior fates?
You’re curious about the effect that gap genes have on the pair-rule gene, evenskipped (eve), so you isolate and sequence each of the eve enhancers. You’re particularly interested in one of the enhancers, which is just upstream of the eve gene.
Describe an experimental technique you would use to find out where this particular eve enhancer is active.
For short answer
questions, write your
answers on the line
provided. To the right is
the mRNA codon table
to use as needed
throughout the exam.
First letter
U
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U CA
UUCPhe
UUA
UCU
Phe UCC
UUG Leu
CUU
UAU.
G
U
UAC TV UGCys
UAA Stop UGA Stop A
UAG Stop UGG Trp
Ser
UCA
UCG
CCU]
0
CUC
CUA
CCC
CAC
CAU His
CGU
CGC
Leu
Pro
CCA
CAA
Gin
CGA Arg
CUG
CCG
CAG
CGG
AUU
ACU
AAU T
AUC lle
A
1
ACC
Thr
AUA
ACA
AUG
Mot ACG
AGG Arg
GUU
GCU
GUC
GCC
G
Val
Ala
GAC Asp
GGU
GGC
GUA
GUG
GCA
GCG
GAA
GGA
Gly
Glu
GAGJ
GGG
AACASH AGU Ser
AAA1
AAG Lys
GAU
AGA
CAL CALUCAO CAO
G
Third letter
1. (+7) Use the table below to answer the questions; use the codon table above to assist you.
The promoter sequence of DNA is on the LEFT. You do not need to fill in the entire table.
Assume we are in the middle of a gene sequence (no need to find a start codon).
DNA
1
DNA
2
mRNA
tRNA
Polypeptide
C
Val
G
C.
T
A
C
a. On which strand of DNA is the template strand (DNA 1 or 2)?_
b. On which side of the mRNA is the 5' end (left or…
Chapter 23 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 23.1 - Prob. 1TQCh. 23.1 - Prob. 2TQCh. 23.1 - Prob. 3TQCh. 23.3 - Prob. 1TQCh. 23.4 - Prob. 1TQCh. 23.5 - Prob. 1TQCh. 23.5 - Prob. 2TQCh. 23.5 - Prob. 3TQCh. 23.6 - Prob. 1TQCh. 23.6 - Prob. 2TQ
Ch. 23 - Prob. 1RQCh. 23 - Prob. 2RQCh. 23 - Prob. 3RQCh. 23 - Prob. 4RQCh. 23 - Prob. 5RQCh. 23 - Prob. 6RQCh. 23 - Prob. 7RQCh. 23 - Prob. 8RQCh. 23 - Prob. 9RQCh. 23 - Prob. 10RQCh. 23 - Prob. 11RQCh. 23 - Prob. 12RQCh. 23 - Prob. 13RQCh. 23 - Prob. 14RQCh. 23 - Prob. 15RQCh. 23 - Prob. 16RQCh. 23 - Prob. 17RQCh. 23 - Prob. 18RQCh. 23 - Prob. 1TQCh. 23 - Prob. 2TQCh. 23 - Prob. 3TQ
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