Lipids Follow the instructions and then answer the questions about your On the b

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Lipids Follow the instructions and then answer the questions about your On the board label which structure is the fat molecule (triglyceride steroid Label the bonds which are specific to the formation of the that spec Where might each of these lipid be found? Draw a saturated lipid with fatty acids that have a 6 Carbon bac Draw an unsaturated lipid with fatty acids that have a 7 Carbon backbone . the phospholipid, and the pid . Pull out all of the functional groups that may be used in Carbohydrates 1. Which statement about phospholipids is incorrect? a. Because their phosphate groups repel each Which of the following statements concerning unsaturated fats is correct? other, they are used as organisms' chief form of short-term energy They are hydrophobic at one end. They are hydrophilic at one end. They are major constituents of cell membranes They contain glycerol linked to fatty acids. 6. They are more common in animals. They have no double bonds in the carbon b· C. d· e. a. b. chains of their fatty acids. They are generally liquids at room They contain more hydrogen than do tem ure d. saturated fats having the same number of carbon atoms 2. Lipids are used for a. Motion and defense. b. Information storage. c.) Energy storage and for some hormones. than do saturated fats. 7. An amphipathic molecule has: a. Two polar ends. b. Two hydrophobic ends. c. A hydrophobic and a hydrophilic portion. d. Only one hydrophobic end. Enzymes and for some hormones. 3 Which of these molecules is not formed by dehydration a only one hydrophilic end. reactions? 8. disaccharides DNA What is a distinguishing feature of most naturally occurring fats? a. They all share four fused rings as a carbon b. Nearly all naturally occurring unsaturated c. Most unsaturated fats have trans double d. Protein e. amylose skeleton. fats have cis double bonds. which of the following statements concerning saturated fats is not true? They are more common in animals than in plants. Tru They have multiple double bonds in the carbon chains of their fatty acids. bonds, causing a kink in the hydrocarbon chain wherever they occur All organisms share an equal ratio of saturated and unsaturated fatty acids. They are distinguished from other lipid a. d. b.) e. forms by their chief role as components of C. They generally solidify at room temperature. ue d. cell membranes. They contain more hydrogen than unsaturated fats having the same number of carbon atoms. They are one of several factors that contribute irue Lipids differ from other large biological molecules in that they 9· a. b. c. do not contain carbon are not truly polymers do not have specific shapes do not contain nitrogen and phosphorus 5. A molecule of a saturated triacylglycerol contains: a. The maximum number of double bonds d. are much larger between carbons in the fatty acid chains. The maximum number of triple bonds between carbons in the fatty acid chains. The maximum number of hydrogen atoms in the fatty acid chains. Fatty acid chains with both amino and carboxyl groups. Alternating single and double bonds between carbons in the fatty acid chains. b. The lipids that form the main structural component of cell membranes are 10. . c. a. phospholipids b. triacylglycerols c. cholesterol d. carbohydrates e. proteins d. e.

Explanation / Answer

Ans-5-c-the maximum number of hydrogen atoms in the fatty acid chains.

A fatty acid or triglycerides in which all carbons in the hydrocarbon tail are connected by single bonds, thus maximizing the number of hydrogen atoms that are attached to the carbon skeleton, Fats made up of saturated fatty acids are solid at room temperature.

Ans-8-nearly all naturally occurring unsaturated fats have cis double bonds.

In cis bond the two pieces of carbon on either side of double bond are either both up or down are called same side of the molecule.

Ans-9-are not truly polymers

Phosphlipids contain phosphorous and may contain nitrogen

Ans-10- phospholipids

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