Human Biology Lab
15th Edition
ISBN: 9781308566672
Author: McGraw-Hill Education
Publisher: Mcgraw-Hill
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Chapter 2.5, Problem 2LO
Summary Introduction
To explain:
The function of each class of lipids.
Introduction:
The classes of lipids include triglycerides, saturated, unsaturated and trans-fatty acids, dietary fats and phospholipids. The triglycerides are formed of three fatty acids and a glycerol backbone. The phospholipids include the phosphate group attached to triglyceride fatty acid molecules. The saturated fats consist of the chain of carbon and hydrogen attached by a single bond and the unsaturated fat consists of the chain of carbon and hydrogen attached by a double bond.
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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 2 Solutions
Human Biology Lab
Ch. 2.1 - Prob. 1LOCh. 2.1 - 2. Describe the structure of an atom.
Ch. 2.1 - Prob. 3LOCh. 2.1 - 4. Distinguish between ionic and covalent bonds.
Ch. 2.2 - Describe the properties of water.Ch. 2.2 - Prob. 2LOCh. 2.2 - Prob. 3LOCh. 2.3 - List the four classes of organic molecules that...Ch. 2.3 - Describe the processes by which the organic...Ch. 2.4 - Prob. 1LO
Ch. 2.4 - Prob. 2LOCh. 2.4 - Prob. 3LOCh. 2.4 - Prob. 4LOCh. 2.4 - Prob. 1BTHCh. 2.4 - Prob. 2BTHCh. 2.5 - Prob. 1LOCh. 2.5 - Prob. 2LOCh. 2.5 - Why might physicians resort to calling HDLs and...Ch. 2.5 - Prob. 2BTHCh. 2.6 - Prob. 1LOCh. 2.6 - Prob. 2LOCh. 2.6 - List the four levels of protein structure and...Ch. 2.7 - Prob. 1LOCh. 2.7 - Prob. 2LOCh. 2 - Prob. 1ACh. 2 - Prob. 2ACh. 2 - Prob. 3ACh. 2 - Prob. 4ACh. 2 - Prob. 5ACh. 2 - Prob. 6ACh. 2 - Prob. 7ACh. 2 - Prob. 8ACh. 2 - Prob. 9ACh. 2 - Prob. 10ACh. 2 - Prob. 11ACh. 2 - Prob. 12ACh. 2 - Prob. 13ACh. 2 - Prob. 14ACh. 2 - Prob. 15ACh. 2 - Prob. 16ACh. 2 - Prob. 17ACh. 2 - Prob. 18ACh. 2 - Prob. 19ACh. 2 - This nucleic acid is typically involved in energy...Ch. 2 - Prob. 1TCCh. 2 - Prob. 2TCCh. 2 - Name another substance that is needed in the body...Ch. 2 - Prob. 4TCCh. 2 - Prob. 5TC
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