Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 48, Problem 13TYK
Summary Introduction
To review:
The effect of increased air movement during shivering in an animal on heat conservation.
Introduction:
The shivering response occurs in animals when their core temperature falls below a set point. This action limits the loss of body heat due to convection. This is hence one of the ways adopted by the endotherm animals to conserve body heat.
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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 48 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 48.1 - Define the terms osmosis, osmolarity, hypoosmotic,...Ch. 48.2 - How are protonephridia, metanephridia, and...Ch. 48.3 - Prob. 1SBCh. 48.3 - Prob. 2SBCh. 48.4 - Prob. 1SBCh. 48.5 - Prob. 1SBCh. 48.5 - Reptiles and birds excrete nitrogenous wastes in...Ch. 48.6 - Distinguish between ectothermy and endothermy....Ch. 48.7 - Prob. 1SBCh. 48.7 - Prob. 2SB
Ch. 48.8 - Prob. 1SBCh. 48 - Which of the following statements about...Ch. 48 - Prob. 2TYKCh. 48 - Prob. 3TYKCh. 48 - Prob. 4TYKCh. 48 - Prob. 5TYKCh. 48 - Which of the following correctly describes a part...Ch. 48 - Which of the following is an example of...Ch. 48 - Prob. 8TYKCh. 48 - Prob. 9TYKCh. 48 - Prob. 10TYKCh. 48 - Prob. 11TYKCh. 48 - Discuss Concepts As a person ages, nephron tubules...Ch. 48 - Prob. 13TYKCh. 48 - Prob. 14TYKCh. 48 - Prob. 15TYKCh. 48 - Prob. 16TYKCh. 48 - Prob. 1ITDCh. 48 - Prob. 2ITDCh. 48 - Prob. 3ITD
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- During a routine medical check up of a healthy man it was found that his haematocrit value was highly unusual – value of 60%. What one of the options below is the most likely reason? He will have a diet high in iron. He is likely to be suffering from anaemia. He lives at high altitude. He has recently recovered from an accident where he lost a lot of blood. He has a very large body size.arrow_forwardExplain what age of culture is most likely to produce an endospore?arrow_forwardExplain why hot temperatures greater than 45 degrees celsius would not initiate the sporulation process in endospores?arrow_forward
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