Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Chapter 19, Problem 19CTQ
Describe the growth at various parts of the S-shaped curve of
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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 19 Solutions
Concepts of Biology
Ch. 19 - Figure 19.2 As this graph shows, population...Ch. 19 - Figure 19.6 If the major food source of seals...Ch. 19 - Figure 19.11 Age structure diagrams for rapidly...Ch. 19 - Which of the following methods will provide...Ch. 19 - Which of the following is best at showing the life...Ch. 19 - Human populations have which type of survivorship...Ch. 19 - Species with limited resources usually exhibit...Ch. 19 - The maximum growth rate characteristic of a...Ch. 19 - The population size of a species capable of being...Ch. 19 - Species that have many offspring at one time are...
Ch. 19 - A forest fire is an example of ________...Ch. 19 - A country with zero population growth is likely to...Ch. 19 - Which type of country has the greatest proportion...Ch. 19 - Which of the following is not a way that humans...Ch. 19 - The first species to live on new land, such as...Ch. 19 - A symbiotic relationship where both of the...Ch. 19 - When an invasive species alters the community...Ch. 19 - Describe how a researcher would determine the size...Ch. 19 - Describe the growth at various parts of the...Ch. 19 - Give an example of how density-dependent and...Ch. 19 - Describe the age structures in rapidly growing...Ch. 19 - Describe the competitive exclusion principle and...Ch. 19 - Describe the potential effects when a keystone...
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