Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 14, Problem 14TF
Summary Introduction
Introduction:
The bodyproducesa chemical barrier which protects the body from bacteria. For example, tears contain lysozyme which helps in the degradation of the bacterial cell wall. This is the first line of the defense system of the host.
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The peptidyl transferase reaction is an exemplification that the ribosome is a ribozyme.
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Chapter 14 Solutions
Microbiology: A Systems Approach
Ch. 14.1 - Summarize the three lines of host defenses.Ch. 14.1 - Identify two components of the first line of...Ch. 14.1 - Discuss the role of normal biota as a first-line...Ch. 14.2 - Define marker, and discuss its importance in the...Ch. 14.3 - Prob. 5AYPCh. 14.3 - List the components of the mononuclear phagocyte...Ch. 14.3 - Prob. 7AYPCh. 14.3 - Prob. 8AYPCh. 14.3 - Name six types of blood cells that function in...Ch. 14.3 - Prob. 10AYP
Ch. 14.4 - List the four major categories of nonspecific...Ch. 14.4 - Summarize the steps in phagocytosis, and describe...Ch. 14.4 - Outline the steps in inflammation.Ch. 14.4 - Discuss the mechanism of fever and its role in...Ch. 14.4 - Compare and contrast the three different...Ch. 14.4 - Name three types of antimicrobial proteins.Ch. 14 - Ail example of a nonspecific chemical barrier to...Ch. 14 - Which nonspecific host defense is associated with...Ch. 14 - Prob. 3MCQCh. 14 - Which of the following is not a lymphoid tissue?...Ch. 14 - Prob. 5MCQCh. 14 - Prob. 6MCQCh. 14 - Prob. 7MCQCh. 14 - Prob. 8MCQCh. 14 - Which of the following substances is/are not...Ch. 14 - Which of the following is the end product of the...Ch. 14 - The liquid component of clotted blood is called...Ch. 14 - Prob. 12TFCh. 14 - Prob. 13TFCh. 14 - Prob. 14TFCh. 14 - Prob. 15TFCh. 14 - Prob. 1CTQCh. 14 - Prob. 2CTQCh. 14 - Prob. 3CTQCh. 14 - a. Inflammation is characterized by heat, pain,...Ch. 14 - HIV predominantly infects T helper cells, cells...Ch. 14 - Prob. 1VCCh. 14 - Prob. 1CM
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- We use Lysozyme to break down the cell wall in E.coli to lyse the cells. Why do we not use Lysozyme on mammalian cells?arrow_forwardProteolytic enzymes are produced in an inactive form. What, if any, benefit might that have?arrow_forwardMost medically useful antibiotics interfere with either peptidogly¬can synthesis or ribosome function. Why would the cytoplasmic membrane be a poor target for antibacterial medications?arrow_forward
- Most medically useful antibiotics interfere with either peptidoglycan synthesis or ribosome function. Why would the cytoplasmic membrane (in general) be a poor target for antibacterial medications?arrow_forwardDefine peptidasearrow_forwardGram-negative bacteria are surrounded by two membrane bilayers separated by a space termed the periplasm. The periplasm is a multipurpose compartment separate from the cytoplasm. The periplasm has a distinct oxidizing environment that allow certain key protein structural features to be formed. Can you identify an amino acid(s) that would be affected by this oxidizing environment? How would it be affected, and what structural features would be sensitive to this environment? Can you discuss the implications of this from a standpoint of recombinant protein expression?arrow_forward
- Ribozyme is class of molecule that is made of RNAs (thus "ribo" in its name) and amino acids (thus "zyme" in its name). True Falsearrow_forwardPeptidoglycan (PG) is a heteropolymer that consists of glycan strands cross-linked by short peptide fragments and makes up the cell wall of archae . True Falsearrow_forwardSilver nitrate is sometimes put into the eyes of newborn infants as a preventive measure against gonorrhea. Silver is a heavy metal. Explain how this treatment may work against bacteriaarrow_forward
- Lysozyme cleaves the bacterial cell wall at ___________. the site between NAM and NAG NAG NAM lipoteichoic acidarrow_forwardFor any antibiotic compounds that don’t appear to inhibit translation of proteins from the ribosome, purpose another potential mechanism whereby this class of antibiotic might be able to act (outside of cell wall/membrane formation). Explain in deatil.arrow_forwardBacteria can make polyribosomes (polysomes) which help them produce a large amount of proteins quickly. True or false?arrow_forward
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