Concept explainers
Interpretation:
The lipoprotein which is responsible for removing the cholesterol deposited in the plaque on arteries needs to be identified.
Concept introduction:
A fat or waxy substance present in all parts of the body is known as cholesterol. It helps in the formation of hormones, cell membranes and vitamin D in the body. There are two sources of cholesterol in the blood (1) food and (2) liver. All the cholesterol in the body is made in liver. Lipoproteins help in the movement of cholesterol and the other fats in the blood. They are like particles spherical in the shape. There are two lipoproteins that are commonly known (1) low density lipoproteins and (2) high density lipoproteins. The low density lipoproteins are also known as bad cholesterol because they contain most of the cholesterol. This contributes in the formation of plaque inside the arteries that can cause heart attack or stroke. To keep the level of LDL low one should avoid food containing saturated fats and extra calories. Exercise can helps in maintaining the LDL level and healthy weight of the body. On the other hand, high density lipoproteins are good cholesterol as they remove the cholesterol from the body. This should be high in the body, this can be done by regular exercise and avoiding saturated fats. A cholesterol level can be checked inside the body. This helps in lowering the risk of heart disease.

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Chapter 20 Solutions
Introduction to General, Organic and Biochemistry
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- 6. A solution (0.0004 M) of Fe(S2CNEt2)3 (see the structural drawing below) in chloroform has absorption bands at: 350 nm (absorbance A = 2.34); 514 nm(absorbance A = 0.0532); Calculate the molar absorptivity values for these bands. Comment on their possible nature (charge transfer transitions or d-d S N- transitions?). (4 points)arrow_forwardWhat is the mechanism for this?arrow_forwardFor questions 1-4, consider the following complexes: [Co(CN)6], [COC14]², [Cr(H2O)6]²+ 4. Room temperature (20°C) measurement of molar magnetic susceptibility (Xm) for Fe(NH4)2(SO4)2×6H2O is 1.1888 x 102 cgs (Gaussian units). Calculate effective magnetic moment and provide a number of unpaired electrons for the iron ion. Use this number to rationalize the coordination geometry around iron center. (4 points)arrow_forward
- 7. Describe the expected 31P and 19F (where applicable) NMR spectral patterns for the following compounds (indicate number of signals and their splitting patterns). a) tetraphenyldiphosphine Ph Ph P-P Ph Ph Ph Ph ' b) tetraphenyldiphosphine monoxide P-P-Ph Ph (2 points) (2 points c) tetrafluorophosphonium hexafluorophosphate [PF4]*[PF6]¯ (4 points)arrow_forward3. For questions 1-4, consider the following complexes: [Co(CN)6]4, [COC14]², [Cr(H2O)6]²+ Which (if any) of these complexes would be expected to display Jahn-Teller distortion? (2 points)arrow_forwardWhat is Instrumental Neutron Activation and what are the advantages and disadvantages in using its applications? (I'm doing an in class assignment and need better understanding of what the instrument can be used for) Please include references so that I can better understand the application of how the instrument works!arrow_forward
- What is Isotope Analysis and what are the advantages and disadvantages in using its applications and instrumentalization? Please include references so that I can better understand how the instrument works!arrow_forward5. Count the electrons on the following complexes and state whether they follow the 18- electron rule: (3 points) Fe(CO)5 Ni(PMe3)4 PMe3 is trimethylphosphine Mn(CO)5Brarrow_forwardFor questions 1-4, consider the following complexes: [Co(CN)6]+, [CoCl4]², [Cr(H2O)6]²+ 2. Draw the corresponding d-orbital splitting for each of the complexes; predict the spin- state (low-spin/high spin) for each of the complexes (if applicable); explain your arguments. Calculate the crystal field stabilization energy for each complex (in Ao or At). (6 points)arrow_forward
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