CUSTOM PRESCOTT'S MICROBIOLOGY
11th Edition
ISBN: 9781266032844
Author: WILLEY
Publisher: MCG
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Chapter 1.2, Problem 4CC
Summary Introduction
Bacillus subtilis is a gram positive, catalase positive bacterium present gastrointestinal tract of humans and soil. It contaminates food and result in food poisoning. A member of the genus Bacillus subtilis is rod shaped and it can form a protective, tough endospore allowing it to tolerate extreme environmental conditions.
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Chapter 1 Solutions
CUSTOM PRESCOTT'S MICROBIOLOGY
Ch. 1.1 - Prob. 1MICh. 1.1 - MICRO INQUIRY How many of the taxa listed in the...Ch. 1.1 - Retrieve, Infer, Apply 1. How did the methods used...Ch. 1.1 - Prob. 2CCCh. 1.2 - MICRO INQUIRY Why ore the probionts pictured above...Ch. 1.2 - MICRO INQUIRY Why does the branch length indicate...Ch. 1.2 - Prob. 1CCCh. 1.2 - Retrieve, Infer, Apply 2. Explain the...Ch. 1.2 - Prob. 3CCCh. 1.2 - Prob. 4CC
Ch. 1.3 - Prob. 1CCCh. 1.3 - Prob. 2CCCh. 1.3 - Prob. 3CCCh. 1.3 - Prob. 4CCCh. 1.3 - Retrieve, Infer, Apply 2. How did Winogradsky and...Ch. 1.4 - Retrieve, Infer, Apply 3. Briefly describe the...Ch. 1.4 - Prob. 2CCCh. 1.4 - Retrieve, Infer, Apply 5. List all the activities...Ch. 1 - Prob. 1RCCh. 1 - Prob. 2RCCh. 1 - Compare, Hypothesize, Invent 2. Why arent viruses,...Ch. 1 - Compare, Hypothesize, Invent 4. Would microbiology...Ch. 1 - Compare, Hypothesize, Invent 5. Some individuals...Ch. 1 - Compare, Hypothesize, Invent 10. Support this...Ch. 1 - Prob. 5AL
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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.arrow_forwardA 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.arrow_forwardWith 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_forward
- 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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