EBK BIOLOGY
11th Edition
ISBN: 9780134226453
Author: Byers
Publisher: PEARSON
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Chapter 21, Problem 5MC
Summary Introduction
Introduction:
Many protists are found to be pathogenic in nature. They can cause diseases in the human body. These diseases affect different organs and organ systems of the body depending on the type of Protist the person is infected with. The symptoms of disease in a patient can indicate the presence of a specific type of pathogen.
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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 21 Solutions
EBK BIOLOGY
Ch. 21 - 1. Which of the following statements about...Ch. 21 - Prob. 2MCCh. 21 - The organism that causes malaria belongs to which...Ch. 21 - Prob. 4MCCh. 21 - Prob. 5MCCh. 21 - Prob. 1FTBCh. 21 - Prob. 2FTBCh. 21 - 3. Protist chloroplasts surrounded by four-layer...Ch. 21 - Prob. 4FTBCh. 21 - Prob. 5FTB
Ch. 21 - Prob. 6FTBCh. 21 - List the major differences between prokaryotes and...Ch. 21 - 2. What is secondary endosymbiosis?
Ch. 21 - Prob. 3RQCh. 21 - 4. What is the major ecological role played by...Ch. 21 - Which protist group consists entirely of parasitic...Ch. 21 - Which protist groups include seaweeds?Ch. 21 - Prob. 7RQCh. 21 - Prob. 1ACCh. 21 - Prob. 2AC
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