Biology: Dynamic Science - With MindTap
4th Edition
ISBN: 9781305934146
Author: Russell
Publisher: Cengage
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Chapter 3, Problem 1ITD
Summary Introduction
To review:
The group containing the highest level of LDL or low-density lipoprotein (bad cholesterol) and the lowest level of HDL or high-density lipoprotein (good cholesterol). The results are shown in the table given below:
Effect of Diet on Lipoprotein levels (mg/dL or milligram per deciliter) | ||||
cis Fatty acids | Trans Fatty acids | Saturated Fats | Optimal level | |
LDL | 103 | 117 | 121 | <100 |
HDL | 55 | 48 | 55 | >40 |
LDL-to-HDL ratio | 1.87 | 2.43 | 2.2 | <2 |
Introduction:
Lipoproteins are the assembly of proteins and lipids, which serves the purpose of transporting lipids (mainly cholesterol) in the blood or extracellular fluid. These have phospholipids on the exterior while other lipids in the interior. Phospholipids are so oriented that the hydrophilic part is on the outer side while the hydrophobic part is on the inner side.
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Chapter 3 Solutions
Biology: Dynamic Science - With MindTap
Ch. 3.1 - What is the difference between hydrocarbons and...Ch. 3.1 - What is the maximum number of bonds that a carbon...Ch. 3.1 - Do carboxyl groups, amino groups, and phosphate...Ch. 3.1 - What is the difference between a dehydration...Ch. 3.2 - What is the difference between a monosaccharide, a...Ch. 3.3 - What are the three most common lipids in living...Ch. 3.4 - Prob. 1SBCh. 3.4 - What is a peptide bond, and what type of reaction...Ch. 3.4 - Prob. 3SBCh. 3.5 - What is the monomer of a nucleic acid...
Ch. 3.5 - What are the chemical differences between DNA and...Ch. 3 - Which functional group has a double bond and forms...Ch. 3 - Which of the following characteristics is not...Ch. 3 - Cellulose is to carbohydrate as: a. amino acid is...Ch. 3 - Maltose, sucrose, and lactose differ from one...Ch. 3 - Lipids that are liquid at room temperature: a. are...Ch. 3 - Which of the following statements about steroids...Ch. 3 - The term secondary structure refers to a proteins:...Ch. 3 - The first and major effect in denaturation of...Ch. 3 - In living systems: a. proteins rarely combine with...Ch. 3 - RNA differs from DNA because: a. RNA may contain...Ch. 3 - Discuss Concepts Identify the following structures...Ch. 3 - Discuss Concepts Lipoproteins are relatively...Ch. 3 - Prob. 13TYKCh. 3 - Prob. 14TYKCh. 3 - Prob. 15TYKCh. 3 - Prob. 1ITDCh. 3 - Prob. 2ITDCh. 3 - Prob. 3ITD
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- Effects of Dietary Fats on Lipoprotein Levels Cholesterol that is made by the liver or that enters the body from food does not dissolve in blood, so it is carried through the bloodstream by lipoproteins. Low-density lipoprotein (LDL) carries cholesterol to body tissues such as artery walls, where it can form deposits associated with cardiovascular disease. Thus, LDL is often called bad cholesterol. Highdensity lipoprotein (HDL) carries cholesterol away from tissues to the liver for disposal, so HDL is often called good cholesterol. In 1990, Ronald Mensink and Martijn Katan published a study that tested the effects of different dietary fats on blood lipoprotein levels. Their results are shown in Figure 2.23. In which group was the level of LDL (bad cholesterol) highest?arrow_forwardEffects of Dietary Fats on Lipoprotein Levels Cholesterol that is made by the liver or that enters the body from food does not dissolve in blood, so it is carried through the bloodstream by lipoproteins. Low-density lipoprotein (LDL) carries cholesterol to body tissues such as artery walls, where it can form deposits associated with cardiovascular disease. Thus, LDL is often called bad cholesterol. Highdensity lipoprotein (HDL) carries cholesterol away from tissues to the liver for disposal, so HDL is often called good cholesterol. In 1990, Ronald Mensink and Martijn Katan published a study that tested the effects of different dietary fats on blood lipoprotein levels. Their results are shown in Figure 2.23. Figure 2.23 Effect of diet on lipoprotein levels. Researchers placed 59 men and women on a diet in which 10 percent of their daily energy intake consisted of cis fatty acids, trans fatty acids, or saturated fats. Blood LDL and HDL levels were measured after three weeks on the diet; averaged results are shown in mg/dL (milligrams per deciliter of blood). All subjects were tested on each of the diets. The ratio of LDL to HDL is also shown. Source, Mensink RP, Katan MB, Effect of dietary trans fatty acids on high-density and low-density lipoprotein cholesterol levels in healthy subjects. NEJM 323(7):43945. An elevated risk of heart disease has been correlated with increasing LDL-to-HDL ratios. Rank the three diets according to their predicted effect on cardiovascular health.arrow_forwardEffects of Dietary Fats on Lipoprotein Levels Cholesterol that is made by the liver or that enters the body from food does not dissolve in blood, so it is carried through the bloodstream by lipoproteins. Low-density lipoprotein (LDL) carries cholesterol to body tissues such as artery walls, where it can form deposits associated with cardiovascular disease. Thus, LDL is often called bad cholesterol. Highdensity lipoprotein (HDL) carries cholesterol away from tissues to the liver for disposal, so HDL is often called good cholesterol. In 1990, Ronald Mensink and Martijn Katan published a study that tested the effects of different dietary fats on blood lipoprotein levels. Their results are shown in Figure 2.23. In which group was the level of HDL (good cholesterol) lowest?arrow_forward
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