Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 42, Problem 7TYU
Summary Introduction
Introduction: Highly developed human brain, along with the spinal cord make up the central nervous system. Main function of the spinal cord is to transmit impulses from the brain to the other parts of the body and from the other parts of the body to the brain. Controlling reflex activities is another function performed by the spinal cord. When an involuntary motor response towards an external stimulus takes place, it is known as a reflex action. When a neural circuit having three types of neurons responds to a stimulus, it is known as withdrawal reflex.
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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 42 Solutions
Biology (MindTap Course List)
Ch. 42.1 - Prob. 1LOCh. 42.1 - Identify trends in the evolution of invertebrate...Ch. 42.1 - Prob. 1CCh. 42.1 - Prob. 2CCh. 42.1 - What are some advantages of cephalization?Ch. 42.2 - Prob. 3LOCh. 42.2 - Prob. 1CCh. 42.2 - Describe the functions of each component of the...Ch. 42.3 - Prob. 4LOCh. 42.3 - Prob. 1C
Ch. 42.3 - Prob. 2CCh. 42.4 - Prob. 5LOCh. 42.4 - Prob. 6LOCh. 42.4 - Prob. 7LOCh. 42.4 - Prob. 8LOCh. 42.4 - Prob. 9LOCh. 42.4 - Prob. 1CCh. 42.4 - What are two main functions of the vertebrate...Ch. 42.4 - Prob. 3CCh. 42.4 - What role does the limbic system play in emotions?...Ch. 42.4 - In what ways does your success on a biology exam...Ch. 42.5 - Describe the organization of the peripheral...Ch. 42.5 - Prob. 11LOCh. 42.5 - Prob. 1CCh. 42.5 - Prob. 2CCh. 42.6 - Prob. 12LOCh. 42.6 - Prob. 1CCh. 42 - Test your Understanding Know and Comprehend A...Ch. 42 - Which part of the vertebrate brain maintains...Ch. 42 - The main association area in the amphibian brain...Ch. 42 - Prob. 4TYUCh. 42 - Prob. 5TYUCh. 42 - Prob. 6TYUCh. 42 - Prob. 7TYUCh. 42 - Test Your Understanding 8. VISUALIZE Label the...Ch. 42 - Prob. 9TYUCh. 42 - Prob. 10TYUCh. 42 - Prob. 11TYUCh. 42 - EVOLUTION LINK CREB has been shown to be a...Ch. 42 - Prob. 13TYU
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