HUMAN BIOLOGY W/ACCESS
16th Edition
ISBN: 9781260997231
Author: Mader
Publisher: MCG
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Chapter 24, Problem 8A
Summary Introduction
Introduction:
The nitrogen cycle is supplied with nitrogen from the atmosphere in the form of nitrogen gas and from the soil in the form of ammonia. The plants utilize nitrogen in the form of ammonia and nitrates. The human activity such as extensive use of fertilizers causes the changes in the nitrogen cycle. The fertilizers leach out to the water bodies that cause hypoxic conditions for the fish due to algal bloom.
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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 24 Solutions
HUMAN BIOLOGY W/ACCESS
Ch. 24.1 - Prob. 1LOCh. 24.1 - Prob. 2LOCh. 24.1 - Prob. 3LOCh. 24.1 - Why can the biosphere be considered a giant...Ch. 24.1 - Prob. 2CYPCh. 24.1 - Prob. 3CYPCh. 24.1 - Prob. 4CYPCh. 24.2 - 1. Recognize the differences between a grazing...Ch. 24.2 - Explain the energy flow among populations through...Ch. 24.2 - Prob. 1BTS
Ch. 24.2 - What is the easiest way to prevent the...Ch. 24.2 - Prob. 3BTSCh. 24.2 - Prob. 4BTSCh. 24.2 - Prob. 1CYPCh. 24.2 - Prob. 2CYPCh. 24.2 - Prob. 3CYPCh. 24.3 - Prob. 1LOCh. 24.3 - Prob. 2LOCh. 24.3 - 3. Identify how human activities can alter each of...Ch. 24.3 - Prob. 1BTBCh. 24.3 - Prob. 2BTBCh. 24.3 - Prob. 1BTSCh. 24.3 - Prob. 2BTSCh. 24.3 - Prob. 1CYPCh. 24.3 - Are the carbon, water, nitrogen, and phosphorus...Ch. 24.3 - Discuss the roles of bacteria in the nitrogen...Ch. 24.3 - Prob. 4CYPCh. 24.3 - Prob. 5CYPCh. 24 - Prob. 1ACh. 24 - Prob. 2ACh. 24 - Prob. 3ACh. 24 - Prob. 4ACh. 24 - Prob. 5ACh. 24 - Prob. 6ACh. 24 - Prob. 7ACh. 24 - Prob. 8ACh. 24 - Prob. 9ACh. 24 - The atmosphere acts as a reservoir. Key: water...Ch. 24 - Prob. 11ACh. 24 - Prob. 12ACh. 24 - Prob. 1TCCh. 24 - Prob. 2TCCh. 24 - Prob. 3TC
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