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- Triacylglycerol A contains 53% oleic acid, 29% linoleic acid, 9% palmitic acid, 4% stearic acid, 1% myristic acid and lesser amount of other fatty acids. Triacylglycerol B contains 39% oleic acid, 29% palmitic acid, 24% stearic acid, 2% myristic acid, 2% linoleic acid and lesser amounts of other fatty acids. Which of the two samples is expected to be solid at room temperature? Explain why.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 statement/s is/are true? Palmitoleic and oleic acids are unsaturated fatty acids Stearic and Linoleic acids are an 18 carbon fatty acid chain Linoleic and lauric acids are saturated fatty acids Palmitic and palmitoleic acids are polyunsaturated fatty acids A) All statements are correct B) Statement 1 and 2 are both correct C) Statement 3 and 4 are both correct D) All statements are incorrect Which statement is correct? A) Animal triacylglycerols are liquids while vegetable triacylglycerols are solid at ambient temperatures. B) Animal fats contain more unsaturated fatty acid units than saturated fatty acids. C) Melting points of animal fats are lower than the melting points of vegetable oils. D) Vegetable oils contain more unsaturated fatty acids units than saturated fatty acids. What makes lipids/fats hydrophobic? A) their long carbon skeleton B) the carboxyl group at one end of the molecule C) the glycerol moiety D) presence of relatively…
- Lipoproteins are relatively large, combined clumps of both protein and lipid molecules that circulate in the blood of mammals. They come in two forms, called HDL and LDL, and they act like suitcases to move cholesterol, fatty acid remnants, triglycerides, and phospholipids from one place to another through the bloodstream. (LDL recirculates lipids throughout the body, while HDL takes lipids to the liver to excrete them in feces.) Given that lipids are hydrophobic and proteins can be hydrophilic, which of the following statements is correct? (a) The lipid portion of LDL does not dissolve in the bloodstream, while the lipid portion of HDL does. (b) The protein portions of both LDL and HDL can dissolve or interact with the water molecules in the bloodstream. (c) Neither the protein nor the lipid portions of LDL molecules can interact with water molecules in the bloodstream. (d) Both the protein and the lipid portions of HDL molecules can interact with water molecules in the bloodstream.…Which 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)According to current dietary recommendations, trans fat intake should be limited. How is this best accomplished? Group of answer choices Select foods containing manufactured rather than naturally occurring trans fats. Read labels to select foods that say “polyunsaturated fatty acid free.” Choose foods with <10% of calories from saturated fat per serving and no hydrogenated oils in the ingredients list. Use fat replacers, such as olestra, which provide the same nutrient content as regular fats without being saturated. Avoid all processed foods such as bakery items, packaged cookies, and store-bought bread.
- Why are linoleate and linolenate considered essential fatty acids? What step in production of polyunsaturated fatty acids are mammals unable to perform?Which of the following statements is incorrect? The rigidity of a saturated fatty acid is based on the strong bonding between sp3-hybridized carbon chains. Glycerophospholipids are the most abundant lipids in cellular membranes. In delta notation of fatty acid nomenclature, the numbering starts at the α-carbon from the carboxylic acid end. Hormones, such as testosterone, estradiol and progesterone are examples of steroidal lipids.How does the presence of a-bonds versus B-bonds influence the digestibility of glucose polymers by humans?Hint: There are two effects.
- Name 3 types of fatty acids. Which is considered least "healthy"? Why? What foods is this type of fat found in?Trans-fatty acids are synthetic forms of fatty acids made from altered unsaturated fatty acids. Trans-fatty acids are denser, solid at room temperature, and store more energy in the same unit of volume than unsaturated fatty acids. The production of trans-fatty acids involves the reorientation of one of the hydrogen atoms attached to a double-bonded car- bon atom, as illustrated in the figure below. unsaturated fatty acid OHHHHH HOC CCCC-c II I I HHHH trans-fatty acid |||| Molecular model of an unsaturated and trans-fatty acid Based on the structures shown above, H -C-C-C-C-C-H HHHHH TTTTT !!!!! HHHHH OHHHHH | ! ! ! ! ! HO-C-C-C-C-c-c IIII HHHH H HHHHH H HH III C-C-C-H I (a) Identify one property of all fatty acids. (b) Describe one of the functions of fatty acids in living systems. (c) Explain how the reorientation of the hydrogen atom as shown in the image allows the trans- fatty acids to be denser and solid at room temperature. Respond to each part in 3 to 5 complete sentences.All of the following statements about amino acid synthesis in humans are true except: Some amino acids are synthesized using major metabolic intermediates and transamination. The process often requires cofactors derived from B vitamins. Allosteric enzymes may be regulated via feedback inhibition. Different organs synthesize different amino acids because they maintain anaerobic conditions.