LIPID AND MEMBRANE QUESTIONS 1. If an unsaturated fatty acid has 18 carbons, a double bond at position ?15 would be in ? notation ? - _________? 2. The functional groups which hold fatty acid molecules and glycerol molecules together in triacylglycerol molecules are called: __________ 3. If a triacylglycerol is heated in aqueous sodium hydroxide (lye) solution glycerol and the sodium salts of fatty acids are produced. This mixture of sodium salts of fatty acids is called in common terminology __________. 4. Name the four parts of phosphatidylcholine. ________, ________, ________ and ________ 5. The molecule found in phospholipids which most resembles glucose is: a) lecithin b) inositol c) choline d) kinetic acid
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If an unsaturated fatty acid has 18 carbons, a double bond position 4"5 would be in @ notation: The @ notation is used to denote the position of the double bond in a fatty acid. In this case, the double bond is between the 4th and 5th carbon atoms. Since the Show more…
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All lipids contain fatty acid chains. Question 4 options: True False Fatty acids that have double bonds in their long chains are called __________________. Question 5 options: saturated fatty acids unsaturated fatty acids fat fatty acids essential fatty acids Which of the following statements about lipids is not true? Question 6 options: Lipids are found in cell membranes. Lipids are soluble in organic solvents. All lipids contain fatty acids. There are many different types of lipids. Which of the following is not a function of lipids in the human body? Question 7 options: Energy storage. Insulation. Protection. pH regulation. A polyunsaturated fatty acid contains more than one.... Question 8 options: carboxyl group. long carbon chain. carbon-carbon double bond hydroxyl group Unsaturated fatty acids have lower melting points than saturated fatty acids because.... Question 9 options: the cis double bonds give them an irregular shape. the trans double bonds give them an irregular shape. they have more hydrogen atoms. they have fewer hydrogen atoms. Which of the following fatty acids is a solid at room temperature? Question 10 options: palmitoleic acid stearic acid linoleic acid linolenic acid Commercially, liquid vegetable oils are converted to solid fats such as margarine by.... Question 11 options: hydrogenation hydration hydrolysis oxidation The products of the acid-catalyzed hydrolysis of a fat are... Question 12 options: the esters of fatty acids glycerol and the salts of fatty acids glycerol and fatty acids trans fats Double bonds in naturally occuring fatty acids are typically trans. Question 13 options: True False
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1. Types of lipids Lipids are fatty, oily, or waxy compounds. Many types of lipids with different structures and properties exist, but all lipids are hydrophilic. The following table provides a description of the features, properties, or uses of different types of lipids in the left-hand column. In the right-hand column, choose the correct type of lipid each description represents. Description of Lipid Type of Lipid This group of lipids includes triglycerides. The polarity of this molecule helps it to form cell membranes. This lipid is what covers many plant surfaces to help prevent water loss and to protect against pests. This lipid is made of rigid carbon rings with no fatty acid tails.
Supreeta N.
8. The basic structure of a lipid is a neutral fat called which consist of one glycerol molecule esterified (ester bond) to three Draw this structure. 9. The primary classes of lipids include fats, oils, sterols, phospholipids, and waxes. What is the difference between saturated and unsaturated fats? How do double bonds affect the saturation of fats? Draw saturated and unsaturated fat. Hint: H3C(CH2)nCOOH or H3C(CH2)n(CH=CH)nCOOH. 10. What effect does the following have on a saturated and unsaturated fats? a. temperature b. acids c. bases. 11. The basic structure of an amino acid includes a central (chiral) carbon bonded to four atoms including _________, _________, _________, and _________. 12. There are four levels of protein structure: Primary, secondary, tertiary, and quarternary. The primary structure involves amino acids sequence from from the N-terminus to the C-terminus. What does N and C mean?
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