EBK HUMAN BIOLOGY
8th Edition
ISBN: 8220102019683
Author: Johnson
Publisher: PEARSON
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Chapter 1, Problem 3AWK
Summary Introduction
Case summary:
A person who firmly believes in the existence of ghosts and claims to have the scientific evidence for the same. Even his two roommates along with him had seen the ghosts.
Characters in the case:
A person and his two roommates, who have seen the ghosts.
Adequate information:
A person claims that he and his roommates have seen the ghosts and they have the evidence that favors the existence of ghosts.
To determine:
Meaning of scientific evidence, the data, and its gathering. Also, discuss why the personal experience does not meet the criteria to be considered as a scientific evidence.
Given the information:
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Chapter 1 Solutions
EBK HUMAN BIOLOGY
Ch. 1 - What should medical professionals, politicians, or...Ch. 1 - Will you vaccinate your children? Why or why not?...Ch. 1 - Living things have a different molecular...Ch. 1 - Explain the meaning of the term homeostasis.Ch. 1 - Name four features that together contribute to our...Ch. 1 - Describe the difference between a hypothesis and a...Ch. 1 - Discuss the role of scientists in helping us solve...Ch. 1 - To which of the following domains of life do...Ch. 1 - To which of the following domains do unicellular...Ch. 1 - New scientific knowledge is gained through a...
Ch. 1 - Prob. 4TYCh. 1 -
5. A broad hypothesis that has been supported by...Ch. 1 - Which of the following is used when developing a...Ch. 1 - Prob. 7TYCh. 1 - Consider all of the organisms (human as well as...Ch. 1 -
9. Which of the following lists the steps of the...Ch. 1 - In graphs, which of the following is usually...Ch. 1 - An acceptable scientific hypothesis: a. can be...Ch. 1 - Prob. 12TYCh. 1 - Prob. 13TYCh. 1 - The maintenance of a relatively stable internal...Ch. 1 - All of the following are features that...Ch. 1 - A magician has a coin that he says (hypothesizes)...Ch. 1 - Your roommate is writing a paper on the subject of...Ch. 1 - Prob. 3AWKCh. 1 - Prob. 4AWKCh. 1 -
5. You are trying to convince your friend who...Ch. 1 - Prob. 6AWKCh. 1 - Explain why religious explanations cannot disprove...
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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.arrow_forwardA 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.arrow_forwardWith 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-haemoglobinarrow_forward
- 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-haemoglobinarrow_forwardWhich ONE of the following is FALSE regarding haemoglobin? It has two alpha subunits and two beta subunits. The subunits are joined by disulphide bonds. Each subunit covalently binds a haem group. Conformational change in one subunit can be transmitted to another. There are many variant ("mutant") forms of haemoglobin that are not harmful.arrow_forwardWhich ONE of the following is FALSE regarding haemoglobin? It has two alpha subunits and two beta subunits. The subunits are joined by disulphide bonds. Each subunit covalently binds a haem group. Conformational change in one subunit can be transmitted to another. There are many variant ("mutant") forms of haemoglobin that are not harmful.arrow_forward
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