BIOLOGY
5th Edition
ISBN: 9781265202859
Author: BROOKER
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Chapter 27.2, Problem 2CS
Summary Introduction
To determine: A flow diagram showing sequential stages of formation of dental plaque biofilm with reference to figure 27.8 given in the textbook. Also indicate which type of bacteria among purple, green, and blue will attach to the surface first.
Introduction: Biofilm is an aggregation and accumulation of microorganisms that secrete various types of adhesive mucilage and glue themselves to the surfaces. These biofilms allow microbes to live in a location that are favorable for their growth.
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Topic 1: Gram staining principle
a. Describe the structure of peptidoglycan
b. Describe in detail the architecture and structure of Gram negative cell wall structure
c. Discuss how Gram positive cell wall is different from Gram negative wall structure.
d. What are teichoic acid and their location? Provide the role of the teichoic acid in bacterial cells.
Helping tags: Biology, bacteria, lag phase
WILL UPVOTE, just pls help me answer the following questions and explain them clearly. Thank
you.
TOPIC: Bacterial Growth Curve
1. How may the following growth and culture conditions affect the length of the lag
phase? EXPLAIN YOUR ANSWERS.
a) inoculum is from an old culture
b) shifting cells from rich culture medium to a poorer one
c) exponentially growing culture is transferred into the same medium under the
same growth conditions
Think about minimal inhibitory concentration (MIC) assays. A set of tubes, all containing the same amount of bacterial cells, have decreasing amount of antibiotic X added to them. Tube 1 had 0mg/ml, Tube 2 has 100mg/ml, tube 3 has 50mg/ml, 4=25, 5=12.5, 6=6.25, and tube 7 has 3.125. If bacteria grew in tubes 1, 4, 5, 6, 7, what is the MIC of this antibiotic for this bacteria?
Select one:
a.None of the Above
b.3.125 mg/ml
c.25 mg/ml
d.0 mg/ml
e.50 mg/ml
Chapter 27 Solutions
BIOLOGY
Ch. 27.2 - Core Skill: Connections Look ahead to Section...Ch. 27.2 - Prob. 2CSCh. 27.2 - Structure and Movement Concept Check: Does the...Ch. 27.2 - Prob. 3CSCh. 27.3 - Prob. 1CCCh. 27.5 - Prob. 1EQCh. 27.5 - Prob. 2EQCh. 27 - Which of the following features is common to...Ch. 27 - The bacterial phylum whose members typically...Ch. 27 - Gram-staining is a procedure that microbiologists...
Ch. 27 - Place the following steps in the correct order,...Ch. 27 - What ecological role do cyanobacteria play? a....Ch. 27 - Prob. 6TYCh. 27 - Prob. 7TYCh. 27 - Prob. 8TYCh. 27 - Prob. 9TYCh. 27 - Prob. 10TYCh. 27 - Prob. 1CQCh. 27 - Prob. 2CQCh. 27 - Prob. 3CQCh. 27 - Prob. 1COQCh. 27 - Prob. 2COQ
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