Biology Now (Core Edition)
Biology Now (Core Edition)
15th Edition
ISBN: 9780393644180
Author: Anne Houtman, Megan Scudellari, Cindy Malone, Anu Singh-Cundy
Publisher: W. W. Norton & Company
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Chapter 21, Problem 1TQ
Summary Introduction

Blood tissue is an important carrier in the body. Blood contains white blood cells (WBC), red blood corpuscles (RBC), and platelets. Blood is pumped by heart from one part to another. Blood is involved in carrying oxygen through the hemoglobin pigment present in the RBCs.

Expert Solution & Answer
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Answer to Problem 1TQ

Blood plasma transports waste products, water, and solutes.

Therefore, option (d) is correct.

Explanation of Solution

Justify reasons for the correct statement:

Blood plasma comprises of water (92%), anti-hemophilic factors, vital proteins, and blood components. It also contains some salts, sugars, vitamins, hormones, and fats. Blood plasma contains dissolved ions, gases, and certain important molecules, which altogether play a role in homeostasis.

Option (d) is given as “all of the above”.

Hence, option (d) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “waste products”.

Blood not only carry waste products like tissue wastes, but it also carries other vital nutrients and immunoglobulins. Hence, it is a wrong answer.

Option (b) is given as “water”.

Blood plasma constitutes 92% water. The rest of the things are comprised of nutrients, RBC, WBC cells, and so on. Hence, it is a wrong answer.

Option (c) is given as “solutes”.

Blood plasma contains 92% water, thus solute content is 8%. Hence, it is a wrong answer.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

Blood plasma is a watery fluid which acts as a carrier to transport nutrients, waste products, ions, and other components in the blood.

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Students have asked these similar questions
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
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