Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 3, Problem 4DAA
Summary Introduction
To explain: Rank the three diets from best to worst, according to their potential effect on heart disease.
Concept introduction: Diet in nutrition refers to all the food consumed by a person in a day. Low density lipoprotein (LDL) transports fat, essentially cholesterol molecules, in an aqueous medium. HDL carries cholesterol to the liver for breaking it down to simple forms, where it is converted into bile acids and sent to the intestine for excretion.
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While not a lipid, cholesterol is often found associated with membranes. Explain how a cholesterol molecule is able to be held in place, and which parts of the cholesterol associate with which parts of the lipds.
Animals like caribou (a.k.a. reindeer) that live in cold arctic regions such as the north pole often have more cholesterol in their legs than the rest of their bodies. Suggest a reason this may occur (cholesterol does not help with flight).
Bile acids are steroid acids found predominantly in the bile of mammals and other vertebrates. Diverse bile acids are synthesized in the liver. Bile acids are conjugated with taurine or glycine residues to give anions called bile salts. *
True
False
Fatty acids are a component of fats but have distinct chemical difference apart from fats that would allow them to travel fairly freely in the aqueous environment of the blood stream. They don’t, however, and are transported with serum albumin. What about the chemistry of fatty acids makes it so that it might not be good to have a lot of them traveling freely in the bloodstream?
Chapter 3 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 3 - Organic molecules consist mainly of ______ atoms....Ch. 3 - Prob. 2SQCh. 3 - _______ groups are the acid part of amino acids...Ch. 3 - Prob. 4SQCh. 3 - Which three carbohydrates can be built using only...Ch. 3 - Prob. 6SQCh. 3 - Prob. 7SQCh. 3 - Steroids are among the lipids with no _________....Ch. 3 - Which of the following is a class of molecules...Ch. 3 - Prob. 1DAA
Ch. 3 - Prob. 2DAACh. 3 - Prob. 3DAACh. 3 - Prob. 4DAACh. 3 - ________ are to proteins as _______ are to nucleic...Ch. 3 - A denatured protein has lost its _______ . a....Ch. 3 - __________ consists of nucleotides. a. Ribose b....Ch. 3 - In the following list, identify the carbohydrate,...Ch. 3 - Match the molecules with the best description....Ch. 3 - Match each polymer with the component monomers....Ch. 3 - Lipoprotein particles are relatively large,...Ch. 3 - In 1976, a team of chemists in the United Kingdom...
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- Explain why saturated (flat) fatty acids cause more plaque in blood vessels than unsaturated (gnarled) fatty acids. (Hint: First explain how lipid molecules are attracted to each other.)arrow_forwardEgg yolks contain a high amount of cholesterol, but they also contain a high amount of lecithin. From a diet and health standpoint, how do these two molecules complement each other?arrow_forwardSome foods naturally have high levels of the free amino acid. For example, parmesan cheese (1689 mg), tomato (246 mg), scallop (159 mg), corn (106 g), and shrimp (43 mg). Wheat protein (gluten) is typically comprised of 30-35% of this amino acid. People with celiac disease cannot metabolize gluten, but have no trouble with foods high in the natural amino acid or MSG. Why is this?arrow_forward
- Although high cholesterol level is associated with cardiovascular disease, cholesterol plays an important role in our system. What are the functions of cholesterol in our body?arrow_forwardA bowl of raisin bran contains the following amounts of carbohydrate: Starch: 13 grams Fiber: 4 grams Sugar: 11 grams Total: 28 grams How many carbohydrate calories will it provide to your body after digestion?arrow_forwardCholesterol is a needed substance for the human body; we use it as a base for certain hormones and as a support structure in our plasma membranes. If it is needed in the body,how can it also be harmful?arrow_forward
- Why does dari creme exist in a solid form at a normal room temperature? Magnolia Pinipili ng MAPILING ina DARICREME Classic 0% Trans Fat Formyed with 4D&E PREMIUM MARGARINE CHOLESTEROL-FREE FOOD Keep Refrigeraed (2-10 C) Net Wt. 200g (7.05 oz) Philippine Market #OnlineShop in TOKYOarrow_forwardCholic acid and deoxycholic acid function in solubilizing dietary lipids in the process of digestion and thereby help in their absorption in the intestine. These molecules belong to which category of lipids? triacylglycerols O glycerophospholipids O sphingolipids terpenes steroidsarrow_forwardWhich of the following represents a proper designation for monounsaturated fatty acid ? 18:0 18:1 (A6) O 17:3(A6,9,12) 17:2 (A5,8)arrow_forward
- Describe TWO important roles of cholesterol that relates to human physiology with examples.arrow_forwardThe following statements are TRUE regarding carbohydrates, EXCEPT: * Carbohydrates are the most efficient and immediate source of energy Sugar units are held by glycosidic linkages that are in alpha or beta form Other than monosaccharides, sucrose is the only nonreducing form of disaccharides The type of oligosaccharides presents on the surface of the RBC determine a person's blood type None of the given optionsarrow_forwardIn lipoproteins, unesterified(free) cholesterol would be found: In the core, along with triglycerides On the surface, along with phospholipids On the surface, along with esterified cholesterol In the core, along with proteinsarrow_forward
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