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level: Level 1

Questions and Answers List

level questions: Level 1

Question	Answer
are esters of long-chain fatty acids and alcohol, or of closely related derivatives form the bulk of the organic matter of living cells refers to substances which have in common the property of being insoluble in water and soluble in organic solvents heterogenous group of compounds which are widely distributed in nature	Lipids (fixed oils, fats, and waxes)
Differentiate 1 Fixed oils and fats 2 Waxes	1 in fixed oils and fats, glycerol combines with the fatty acids 2 in waxes, the alcohol has a higher molecular weight
1 Fats and fixed oils are obtained from __ 2 Fats and fixed oils primary function	1 plants (olive oil, peantut oil) animals (lard) 2 food (energy) storage
1 fixed oils and fats are often separated from the crude vegetable drugs by __ 2 fixed oils and fats are often separated from the crude animal drugs by __ 3 Fixed oils and fats differ only in	1 Expression method 2 Rendering or Extraction method 3 melting points
1 they are liquid at normal temperatures 2 they are semisolid or solid at ordinary temperatures	1 fatty and fixed oils 2 fats
1 a solid vegetable oil in the temperature climates and a liquid in its tropical region of origin 2 a liquid animal fat	1 coconut oil 2 cod liver oil
the number of milligrams of potassium hydroxide required to neutralize the fatty acids in 1 g of the substance indicates the amount of free fatty acids present in the oil	acid value or acid number
indicates the number of milligrams of potassium hydroxide required to neutralize the free fatty acids and saponify the esters contained in 1 g of the substance	saponification value
the number of grams of iodine absorbed, under presccribed conditions, by 100 g of the substance indicates the degree of unsaturation	iodine number
1 Fixed oils and fats of vegetable origin are obtained by expression in hydraulic presses. If the expression is carried out in the cold, the oil is known as __ 2 Sometimes __ solvents are used for the extraction of oils	1 virgin oil or cold-pressed oil 2 organic
1 this part of the plant contain larger quantities of fats and oils than other parts also the usual source of fixed oils 2 other plant parts that yield considerable quantities of fixed oils	1 seeds 2 pericarp of the olive
List of fixed oils obtained from seeds	cottonseed, linseed, sesame seed, rapeseed, coconut, castor beans, almond
Chemically, the fixed oils and fats are composed predominately of __	triacylglycerols / triglycerides