Which of the following is not a function of lipids ? * Structural components of membranes. O Metabolic regulators. O Help in absorption of fat-soluble vitamins. O Carry genetic information. O Protect internal organs by providing a cushioning effect.
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Q: contain a glycerol backbone attached to three fatty acids.
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- Match each type of molecule with its description. _________ chain of amino acids _________ energy carrier _________ glycerol, fatty acids, _________ phosphate _________ chain of nucleotides _________ one or more sugar units a. carbohydrate b. phospholipid c. protein d. DNA e. ATPAll of the following except ________ are building blocks or energy sources in cells. a. fatty acids b. simple sugars c. lipids d. amino acids e. nucleotidesWhich of the following functions is NOT or cannot be performed by lipids? They can bind to DNA response elements to control gene expression. They can serve as chemical messengers. They can help in the selective permeability of membranes. They can form pores for the thermodynamically favored passage of ions across membranes.
- Which one of the following statements about lipids is correct?a. Saturated fats contain many double bonds.b. Unsaturated fats do not have double bonds.c. Fatty acids contain 9 kilocalories per gram.d. Steroids consist of chain structure molecules.Choose the incorrect statement about fatty acids out of the following: The membrane lipids contain mostly unsaturated fatty acids The melting point of fatty acids decreases with increasing degree of unsaturation Naturally ocurring unsaturated long chain fatty acids are nearly all trans Lipids in tissues that are subject to cooling are more unsaturatedWhich of the following is not a function of a protein? help fight diseases build tissues such as bone and muscle control the rate of reactions and regulate cell processes store and transmit genetic information
- Which of the following describes a purpose of the glycosylation of proteins? A. Glycosylation tags a protein for destruction within a cell. B. Glycosylation is a process that causes cells to import new proteins from the extracellular space. C. Glycosylation indicates where a protein belongs within a cell. D. Glycosylation is the process of bonding amino acids to each other to build a protein.Lipids form the barriers surrounding various compartments within an organism. Which property of lipids makes them a good barrier? Select one: a.Lipids release large amounts of energy when broken down. b.Lipids store energy. c.Many biologically important molecules and ions are not soluble in lipids. d.Lipids are triglycerides. e.Lipids are polymers.Which of the following statements regarding trans fatty acids is FALSE? Trans fatty acids increase the shelf-life of processed foods. Trans fatty acids were saturated fatty acids prior to hydrogenation. A diet that is rich in trans fatty acids increases the risk of heart disease, and therefore trans fatty acids in foods must be labeled. Trans fatty acids are a byproduct of hydrogenating fats.
- Which of the following statements is true of fatty acids? Group of answer choices The more carbon atoms and nitrogen atoms present in a fatty acid, the shorter the fatty acid is. The more hydrogen atoms attached to carbon atoms, the more saturated a fatty acid is. All fatty acids are solid at room temperature. All fatty acids have only double bonds. All fatty acids have the same chain length.What characteristic is common to all lipid molecules? The are composed of primarily carbon and oxygen atoms. They are most typically charged molecules. They are only located in cell membranes. They do not dissolve in water.Which of the following statements is false? a. Fiber is a polysaccharide that is completely or partially indigestible by the human body. b. A complete protein contains all of the essential amino acids. c. Saturated fats contain hydrogen atoms arranged on opposite sides of the carbon-carbon double bond. d. Linoleic and linolenic acid are essential fatty acid