Microbiology with Diseases by Taxonomy (5th Edition)
Microbiology with Diseases by Taxonomy (5th Edition)
5th Edition
ISBN: 9780134019192
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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Chapter 6, Problem 13CT

The filamentous bacterium Beggiatoa gets its carbon from carbon dioxide and its electrons and energy from hydrogen sulfide. What is its nutritional classification?

Not all organisms are easy to classify. For instance, the single-celled eukaryote Euglena granulata typically uses light energy and gets its carbon from carbon dioxide. However, when it is cultured on a suitable medium in the dark, this microbe utilizes energy and carbon solely from organic compounds. What is the nutritional classification of Euglena?

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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 6 Solutions

Microbiology with Diseases by Taxonomy (5th Edition)

Ch. 6 - Prob. 11MCCh. 6 - Prob. 12MCCh. 6 - Prob. 13MCCh. 6 - Lyophilization can be described as ___________. a....Ch. 6 - Prob. 15MCCh. 6 - Prob. 1FIBCh. 6 - Prob. 2FIBCh. 6 - Prob. 3FIBCh. 6 - Prob. 4FIBCh. 6 - Prob. 5FIBCh. 6 - Prob. 6FIBCh. 6 - Prob. 7FIBCh. 6 - Prob. 8FIBCh. 6 - Prob. 9FIBCh. 6 - Prob. 10FIBCh. 6 - Prob. 11FIBCh. 6 - Prob. 1VICh. 6 - Prob. 2VICh. 6 - High temperature affects the shape of particular...Ch. 6 - Support or refute the following statement:...Ch. 6 - Prob. 3SACh. 6 - Why must media, vessels, and instruments be...Ch. 6 - Prob. 5SACh. 6 - Prob. 6SACh. 6 - Draw and label the four distinct phases of a...Ch. 6 - Prob. 8SACh. 6 - Prob. 9SACh. 6 - Prob. 10SACh. 6 - Explain the differences among photoautotrophs,...Ch. 6 - Prob. 12SACh. 6 - How does a chemostat maintain a constant...Ch. 6 - A scientist describes an organism as a...Ch. 6 - Pasteurization is a technique that uses...Ch. 6 - Prob. 3CTCh. 6 - Some organisms require riboflavin (vitamin B2) to...Ch. 6 - A scientist inoculates a bacterium into a complex...Ch. 6 - How can regions within biofilms differ in their...Ch. 6 - A scientific article describes a bacterium as an...Ch. 6 - Prob. 8CTCh. 6 - Prob. 9CTCh. 6 - Starting with 10 bacterial cells per milliliter in...Ch. 6 - Prob. 11CTCh. 6 - Prob. 12CTCh. 6 - The filamentous bacterium Beggiatoa gets its...Ch. 6 - Prob. 14CTCh. 6 - Examine the graph in Figure 6.3. Note that the...Ch. 6 - Prob. 16CTCh. 6 - Using the terms in Figure 6.8a, describe the...Ch. 6 - Prob. 18CTCh. 6 - Examine the ingredients of MacConkey agar as...Ch. 6 - Prob. 20CTCh. 6 - Using as many of the following terms as...Ch. 6 - Prob. 22CTCh. 6 - Viable plate counts are used to estimate...Ch. 6 - Using the following terms, fill in the following...Ch. 6 - Prob. 1TMWCh. 6 - Why do clinical laboratory scientists keep many...Ch. 6 - Prob. 3TMWCh. 6 - Culturing Microorganisms One of Kochs postulates...Ch. 6 - Clinical Case Study Boils in the Locker Room For...
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