Foundations in Microbiology
10th Edition
ISBN: 9781259705212
Author: Kathleen Park Talaro, Barry Chess Instructor
Publisher: McGraw-Hill Education
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Chapter 13.3, Problem 17ELO
Summary Introduction
Introduction:
Pathogens have specific exit paths from the host called the portals of exit. In most cases the pathogen is shed or released from the body through secretion, excretion, discharge, or sloughed tissue. The high number of pathogens in these materials increases both virulence and the likelihood that the pathogen will reach other hosts.
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A sample of blood was taken from the above individual and prepared for haemoglobin analysis. However, when water was added the cells did not lyse and looked normal in size and shape. The technician suspected that they had may have made an error in the protocol – what is the most likely explanation?
The cell membranes are more resistant than normal.
An isotonic solution had been added instead of water.
A solution of 0.1 M NaCl had been added instead of water.
Not enough water had been added to the red blood cell pellet.
The man had sickle-cell anaemia.
A sample of blood was taken from the above individual and prepared for haemoglobin analysis. However, when water was added the cells did not lyse and looked normal in size and shape. The technician suspected that they had may have made an error in the protocol – what is the most likely explanation?
The cell membranes are more resistant than normal.
An isotonic solution had been added instead of water.
A solution of 0.1 M NaCl had been added instead of water.
Not enough water had been added to the red blood cell pellet.
The man had sickle-cell anaemia.
With reference to their absorption spectra of the oxy haemoglobin intact line) and deoxyhemoglobin (broken line) shown in Figure 2 below, how would you best explain the reason why there are differences in the major peaks of the spectra? Figure 2. SPECTRA OF OXYGENATED AND DEOXYGENATED HAEMOGLOBIN OBTAINED WITH THE RECORDING SPECTROPHOTOMETER 1.4 Abs < 0.8 06 0.4 400 420 440 460 480 500 520 540 560 580 600 nm 1. The difference in the spectra is due to a pH change in the deoxy-haemoglobin due to uptake of CO2- 2. There is more oxygen-carrying plasma in the oxy-haemoglobin sample. 3. The change in Mr due to oxygen binding causes the oxy haemoglobin to have a higher absorbance peak. 4. Oxy-haemoglobin is contaminated by carbaminohemoglobin, and therefore has a higher absorbance peak 5. Oxy-haemoglobin absorbs more light of blue wavelengths and less of red wavelengths than deoxy-haemoglobin
Chapter 13 Solutions
Foundations in Microbiology
Ch. 13.1 - Describe some of the major interactions between...Ch. 13.1 - Prob. 2ELOCh. 13.1 - Discuss the characteristics of the normal...Ch. 13.1 - Briefly relate the sources and conditions that...Ch. 13.1 - Identify which bodily sites remain free of living...Ch. 13.1 - Prob. 6ELOCh. 13.1 - Prob. 1CYPCh. 13.1 - Prob. 2CYPCh. 13.1 - Prob. 3CYPCh. 13.1 - Prob. 4CYP
Ch. 13.1 - Prob. 5CYPCh. 13.1 - Differentiate between transient and resident...Ch. 13.1 - Explain the factors that cause variations in the...Ch. 13.2 - Review the main stages in the development of an...Ch. 13.2 - Prob. 8ELOCh. 13.2 - Prob. 9ELOCh. 13.2 - Prob. 10ELOCh. 13.2 - Prob. 11ELOCh. 13.2 - Identify and discuss invasive factors and...Ch. 13.2 - Prob. 13ELOCh. 13.2 - Explain several ways in which true pathogens...Ch. 13.2 - Distinguish between pathogenicity and virulence.Ch. 13.2 - Prob. 10CYPCh. 13.2 - Prob. 11CYPCh. 13.2 - Prob. 12CYPCh. 13.2 - Describe several components of pathogens that are...Ch. 13.2 - Prob. 14CYPCh. 13.2 - Prob. 15CYPCh. 13.2 - Define toxigenicity and summarize the main...Ch. 13.2 - Prob. 17CYPCh. 13.3 - Describe the clinical stages of infection.Ch. 13.3 - Use key terms to describe different patterns of...Ch. 13.3 - Prob. 16ELOCh. 13.3 - Prob. 17ELOCh. 13.3 - Explain what is happening during each stage of...Ch. 13.3 - Prob. 19CYPCh. 13.3 - Name some examples of infections and their portals...Ch. 13.3 - 21. Using terminology from this section's “Guide...Ch. 13.4 - Define epidemiology, and summarize the major goals...Ch. 13.4 - Prob. 19ELOCh. 13.4 - Prob. 20ELOCh. 13.4 - Prob. 21ELOCh. 13.4 - Prob. 22ELOCh. 13.4 - Prob. 23ELOCh. 13.4 - Prob. 22CYPCh. 13.4 - Prob. 23CYPCh. 13.4 - Prob. 24CYPCh. 13.4 - Prob. 25CYPCh. 13.4 - Prob. 26CYPCh. 13.4 - What is epidemiologically and medically important...Ch. 13.5 - Prob. 24ELOCh. 13.5 - Prob. 25ELOCh. 13.5 - Summarize the steps in Koch’s postulates, and...Ch. 13.5 - Prob. 27ELOCh. 13.5 - Prob. 28ELOCh. 13.5 - Prob. 28CYPCh. 13.5 - Prob. 29CYPCh. 13.5 - Prob. 30CYPCh. 13.5 - Prob. 31CYPCh. 13.5 - Prob. 32CYPCh. 13.5 - Outline the major factors involved in...Ch. 13.L1 - Prob. 1MCQCh. 13.L1 - Prob. 2MCQCh. 13.L1 - Prob. 3MCQCh. 13.L1 - Prob. 4MCQCh. 13.L1 - Prob. 5MCQCh. 13.L1 - Prob. 6MCQCh. 13.L1 - Prob. 7MCQCh. 13.L1 - The presence of a few bacteria in the blood is...Ch. 13.L1 - Prob. 9MCQCh. 13.L1 - A/an ______ is a passive animal transporter of...Ch. 13.L1 - Prob. 11MCQCh. 13.L1 - Prob. 12MCQCh. 13.L1 - Prob. 13MCQCh. 13.L1 - A positive antibody test for HIV would be a...Ch. 13.L1 - Prob. 15MCQCh. 13.L1 - Prob. 16MCQCh. 13.L1 - Prob. 1CSRCh. 13.L1 - Prob. 2CSRCh. 13.L1 - Prob. 3CSRCh. 13.L1 - Prob. 1WCCh. 13.L1 - Prob. 2WCCh. 13.L1 - Prob. 3WCCh. 13.L1 - Prob. 4WCCh. 13.L1 - Prob. 5WCCh. 13.L1 - Prob. 6WCCh. 13.L1 - Prob. 7WCCh. 13.L1 - a. Outline the five types of clinical isolation....Ch. 13.L1 - Complete the following table. Chemical makeup...Ch. 13.L2 - Discuss the relationship between the vaginal...Ch. 13.L2 - Prob. 2CTCh. 13.L2 - How could the microbiome cause some infections to...Ch. 13.L2 - Each of the nine patient specimens listed below...Ch. 13.L2 - Prob. 5CTCh. 13.L2 - Prob. 6CTCh. 13.L2 - Prob. 7CTCh. 13.L2 - a. Suggest several reasons why respiratory,...Ch. 13.L2 - Summarize the epidemiological findings in the...Ch. 13.L2 - Looking at figure 13.20b. Which pattern of...Ch. 13.L2 - Prob. 1VCCh. 13.L2 - Observe the following maps (a)-(c) of three...Ch. 13.L2 - Prob. 3VC
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- With reference to their absorption spectra of the oxy haemoglobin intact line) and deoxyhemoglobin (broken line) shown in Figure 2 below, how would you best explain the reason why there are differences in the major peaks of the spectra? Figure 2. SPECTRA OF OXYGENATED AND DEOXYGENATED HAEMOGLOBIN OBTAINED WITH THE RECORDING SPECTROPHOTOMETER 1.4 Abs < 0.8 06 0.4 400 420 440 460 480 500 520 540 560 580 600 nm 1. The difference in the spectra is due to a pH change in the deoxy-haemoglobin due to uptake of CO2- 2. There is more oxygen-carrying plasma in the oxy-haemoglobin sample. 3. The change in Mr due to oxygen binding causes the oxy haemoglobin to have a higher absorbance peak. 4. Oxy-haemoglobin is contaminated by carbaminohemoglobin, and therefore has a higher absorbance peak 5. Oxy-haemoglobin absorbs more light of blue wavelengths and less of red wavelengths than deoxy-haemoglobinarrow_forwardWhich ONE of the following is FALSE regarding haemoglobin? It has two alpha subunits and two beta subunits. The subunits are joined by disulphide bonds. Each subunit covalently binds a haem group. Conformational change in one subunit can be transmitted to another. There are many variant ("mutant") forms of haemoglobin that are not harmful.arrow_forwardWhich ONE of the following is FALSE regarding haemoglobin? It has two alpha subunits and two beta subunits. The subunits are joined by disulphide bonds. Each subunit covalently binds a haem group. Conformational change in one subunit can be transmitted to another. There are many variant ("mutant") forms of haemoglobin that are not harmful.arrow_forward
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