Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 17, Problem 15RQ
Autoantibodies are probably involved in ________.
a. reactions to poison ivy
b. pollen allergies
c. systemic lupus erythematosus
d. HIV/AIDS
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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 17 Solutions
Concepts of Biology
Ch. 17 - Figure 17.5 Which of the following statements...Ch. 17 - Figure 17.6 Influenza virus is packaged in a viral...Ch. 17 - Figure 17.17 The Rh antigen is found on...Ch. 17 - Which statement is true? a. A virion contains DNA...Ch. 17 - The viral ________ plays a role in attaching a...Ch. 17 - Which statement is true of viral replication? a....Ch. 17 - Which of the following is a barrier against...Ch. 17 - Although interferons have several effects, they...Ch. 17 - Which innate immune system component uses MHC...Ch. 17 - The humoral immune response depends on which...
Ch. 17 - The fact that the body does not normally mount an...Ch. 17 - Foreign particles circulating in the blood are...Ch. 17 - Allergy to pollen is classified as _______. a. an...Ch. 17 - A potential cause of acquired autoimmunity is...Ch. 17 - Autoantibodies are probably involved in ________....Ch. 17 - Why can’t dogs catch the measles?Ch. 17 - Why is immunization after being bitten by a rabid...Ch. 17 - Different MHC class I molecules between donor and...Ch. 17 - If a series of genetic mutations prevented some,...Ch. 17 - How do B and T cells differ with respect to...Ch. 17 - Why is the immune response after reinfection much...Ch. 17 - Some photographers develop a sensitivity to...
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