I. True or false (circle or underline the correct answer): a. Lipids are amphipa
ID: 552470 • Letter: I
Question
I. True or false (circle or underline the correct answer): a. Lipids are amphipathic molecules, (F) b. Certain plant fatty acids are required (essential) in diets of animals. ( (F) c. Glycerol esterified with three fatty acids is called a sphingolipid. (T) d. Waxes are esters of long-chain alcohol and long-chain fatty acid. (T) (F) e. The short hand notation for a fatty acid that is 20 carbons long with one double bond at carbon 5 ean be written as 20:1(4). (T) (F) f. Stearic acid is an unsaturated fatty acid. (T) (F) 2. Fill in the blanks: are biomolecules composed of a long hydrocarbon chain (tail) and a carboxyl group (head). When all of the carbon-carbon bonds are single bonds the compound is said to be. Compounds of this type that has one carbon-carbon double bond are-........................ These biomolecules whereas those with multiple carbon-carbon double bonds are are components of triacylglycerides in which they are joined to a backbone using a(n) -- linkage. o Head-group substituent a. Name the structural family of lipids to which the above compound belongs. b. Suggest a biological role for this compound: c. Name the family of compounds used for long-term, energy storage in animals. . d. What are the advantages (name at least two) of this family mentioned in (c) as energy storage compounds over other energy storage compounds?Explanation / Answer
1.
A. True. As there's OH bonding occuring. Which helps lipids being water loving.
B. True.
C. False. Sphingolipids, or glycosylceramides, are a class of lipids containing a backbone of sphingoid bases, a set of aliphatic amino alcohols that includes sphingosine. They were discovered in brain extracts.
D. True.
E. True
F. False. Stearic acid is a saturated fatty acid.