Description : Drying oils contain a fairly large proportion of – (1) fats (2) proteins (3) saturated fatty acids (4) unsaturated fatty acids
Last Answer : (4) unsaturated fatty acids Explanation: They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
Description : Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as __________ oil. (A) Drying (B) Semi-drying (C) Non-drying (D) None of these
Last Answer : (C) Non-drying
Description : Membrane lipids of chillsensitive plants contain - (1) low proportion of saturated fatty acids. (2) low proportion of unsaturated fatty acids. (3) equal proportion of saturated and unsaturated fatty acids. (4) high proportion of unsaturated fatty acids.
Last Answer : (4) high proportion of unsaturated fatty acids. Explanation: The membranes of chill sensitive plants have been found to have about a 2:1 ratio of unsaturated to saturated fatty ... increases and the critical temperature decreases when chill-sensitive plants are acclimated to a low temperature.
Description : Membrane lipids of chillsensitive plants contain (1) low proportion of saturated fatty acids. (2) low proportion of unsaturated fatty acids. (3) equal proportion of saturated and unsaturated fatty acids. (4) high proportion of unsaturated fatty acids.
Last Answer : high proportion of unsaturated fatty acids.
Description : Fats as compared to oils have (A) More unsaturated glycerides of fatty acids (B) Less unsaturated glycerides of fatty acids (C) Much higher reactivity to oxygen (D) Lower melting point
Last Answer : (B) Less unsaturated glycerides of fatty acids
Description : Which of the following statements is not true about triacylglycerols? (a) When solids and semisolids at room temperature, they are called fats. (b) When liquids at room temperature, they are ... low melting points are composed of saturated fatty acids, causing them to be liquids at room temperature
Last Answer : Triacylglycerols with low melting points are composed of saturated fatty acids, causing them to be liquids at room temperature
Description : Which of the following statements is not true about fatty acids? (a) Fatty acids are carboxylic acids with long hydrocarbon side chains. (b) The double bonds in unsaturated fatty acids are always ... contain even numbers of carbons and are unbranched. (d) Fatty acids can be saturated or unsaturated
Last Answer : The double bonds in unsaturated fatty acids are always conjugated
Description : What chemical functionality do unsaturated fatty acid contain that saturated fatty acids do not?
Last Answer : ANSWER: DOUBLE BONDS or CARBON-CARBON DOUBLE BONDS
Description : What causes unsaturated fatty acid to have different shape than saturated fats?
Last Answer : what are accurate comparisons of bases found in robins as opposed to bases found in sparrows
Description : Pick out the correct statement. (A) A fat is converted into oil by its hydrogenation (B) There is no difference between a fat and an oil so far as its physical properties are ... Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content
Last Answer : (C) All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon atoms
Description : Oils and fats are (a) Glyceryl esters of higher fatty acids (b) Acetyl esters of higher fatty acids (c) Ethyl esters of fatty acids (d) Methyl esters of fatty acids
Last Answer : Ans:(a)
Description : The process of neutralizing the fatty acids present in the oils or fats by adding sodium
Last Answer : hydroxide is called saponification.
Description : Predominant fatty acids in meat are (A) Saturated (B) Monounsaturated (C) Polyunsaturated (D) Mono and poly-unsaturated
Last Answer : Answer : A
Description : Fats and oils contain ____ times more energy than proteins and carbohydrates. a. 2.25 c. 1.5 b. 2 d. 3
Last Answer : a. 2.25
Description : Consider the following statements: 1. Normal diet should contain 75gm of fat. 2. Fatty acids should be a part of human diet. 3. The cells of the human body cannot synthesise any fatty acids. 4. Deficiency diseases develop due to the absence ... correct? (a) 1, 2 (b) 2, 3 (c) 1, 2, 3, 4 (d) 1, 2, 4
Last Answer : Ans:(b)
Description : Enzymes are – (1) Proteins (2) Minerals (3) Oils (4) Fatty acids
Last Answer : (1) Proteins Explanation: Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur everywhere in life. They are in general globular proteins. They speed up reactions by providing an alternative reaction pathway of lower activation energy.
Description : Enzymes are (1) Proteins (2) Minerals (3) Oils (4) Fatty acids
Last Answer : Proteins
Description : Which of the following vegetable oils does not contain essential fatty acids? (1) Sunflower oil (2) Mustard oil (3) Coconut oil (4) Gmundnut oil
Last Answer : (1) Sunflower oil Explanation: Fatty Acids are aliphatic carboxylic acid with varying hydrocarbon lengths at one end of the chain joined to terminal carboxyl (-COOH) group at the other end.
Description : Which of the following vegetable oils does not contain essential fatty acids ? (1) Sunflower oil (2) Mustard oil (3) Coconut oil (4)Groundnut oil
Last Answer : Sunflower oil
Description : Unsaturated oils compared to saturated oils have (A) Lower melting point & higher reactivity to oxygen (B) Higher melting point & higher reactivity to oxygen (C) Lower melting point & lower reactivity to oxygen (D) Higher melting point & lower reactivity to oxygen
Last Answer : (A) Lower melting point & higher reactivity to oxygen
Description : Fluidity of membranes is increased by the following constituent except (A) Polyunsaturated fatty acids (B) Saturated fatty acids (C) Integral proteins (D) Cholesterol
Description : Which gas is used for converting vegetable oils into saturated fats? (1) H2 (2) O2 (3) Cl2 (4) SO2
Last Answer : (1) H2 Explanation: Hydrogenation - to treat with hydrogen - is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst. ... oils are derived from polyunsaturated fatty acids (containing more than one carbon-carbon double bonds).
Description : Which gas is used for converting vegetable oils into saturated fats ? (1) H2 (2) O2 (3) Cl2 (4) SO2
Last Answer : H2
Description : Chemically, lipoic acid is (A) Saturated fatty acid (B) Unsaturated fatty acid (C) Amino acid (D) Sulphur containing fatty acid
Last Answer : Answer : D
Description : A phosphoglyceride is always made up of (a) a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached (b) a saturated or unsaturated ... unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached.
Last Answer : (a) a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached
Last Answer : (D) Sulphur containing fatty acid
Description : What are enzymes? (a) saccharides that catalyze chemical reactions (b) unsaturated fats that catalyze chemical reactions (c) DNA molecules that catalyze chemical reactions (d) proteins that catalyze chemical reactions
Last Answer : proteins that catalyze chemical reactions
Description : Which one of the following forms the base of vegetable fibres? (1) Cellulose (2) Proteins (3) Fats (4) Oils
Last Answer : (1) Cellulose Explanation: The principal chemical component of vegetable fibers is cellulose, with varying amounts of lignin and hemicelluloses also usually present; thus, the fibers are also ... bagasse, and banana. Vegetable fibers are usually stiffer but less tough than synthetic fibers.
Description : Neutral fats, oils and waxes may be classified as: a) lipids b) carbohydrates c) proteins d) none of the above
Last Answer : ANSWER: A -- LIPIDS
Last Answer : Cellulose
Description : Prostaglandins are (A) C2 unsaturated acids (B) C27 saturated alcohols (C) C20 saturated acids (D) C27 saturated alcohols
Description : Which of the following statements best describes the structure of waxes? (a) long-chain unsaturated carboxylic acids (b) long-chain saturated carboxylic acids (c) long-chain esters (d) short-chain esters
Last Answer : long-chain esters
Description : Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified oils (A) Cause cholesterol build up and blood clotting (B) Are prone to rancid oxidation (C ... (as their complete removal is very difficult) (D) Have affinity to retain harmful sulphur compounds
Last Answer : (A) Cause cholesterol build up and blood clotting
Description : What is a keystone species? (a) A species which makes up only a small proportion of the total biomass of a community, yet has a huge impact on the community's organization and ... A dominant species that constitutes a large. proportion of the biomass and which affects many other species.
Last Answer : (a) A species which makes up only a small proportion of the total biomass of a community, yet has a huge impact on the community’s organization and survival.
Description : Lecithins contain an unsaturated fatty acid at position: (A) α (B) α and β (C) β (D) None of these
Last Answer : Answer : C
Description : What are unsaturated fatty acids? -Biology
Last Answer : answer:
Description : What are unsaturated fatty acids ?
Last Answer : Lubricants that are liquid are called oils . Oil is an unsaturated fatty acid.
Description : The fatty acids containing even number and odd number of carbon atoms as well as the unsaturated fatty acids are oxidized by (A) α-oxidation (B) β-oxidation (C) ω-oxidation (D) All of these
Last Answer : Answer : B
Description : Unsaturated fatty acids is known as (A) Non-essential fatty acids (B) Essential fatty acids (C) Cerebrosides (D) Phospholipids
Description : Eicosanoids are a group of _____ carbon unsaturated fatty acids (a) 20 (b) 10 (c) 25 (d) 35
Last Answer : Ans: A
Description : When unsaturated fatty acids are oxidised, how many ATP is formed?
Last Answer : The energy yield is less by 2 ATP molecules per double bond, when compared to the corresponding chain length saturated fatty acid.
Description : Name some unsaturated fatty acids.
Last Answer : Oleic, linoleic, linolenic and arachidonic acids.
Description : Prostaglandins: a. contains 20 carbon atoms b. are unsaturated fatty acids containing a cyclopentane ring c. the different types of prostaglandins are classified according to the configuration of the cyclopentane ring d. all above
Last Answer : all above
Description : Fatty acids are (a) Unsaturated dicarboxylic acids (b) Long-chain alkanoic acids (c) Aromatic carboxylic acids (d) Aromatic dicarboxylic acids
Last Answer : Long-chain alkanoic acids
Description : The enzyme that catalyse the changing of emulsified oils to fatty acids and glycerol is -
Last Answer : The enzyme that catalyse the changing of emulsified oils to fatty acids and glycerol is - A. Pepsin B. Lipase C. Amylase D. Sucrose
Description : Esters of fatty acids with higher alcohol other than glycerol are called as (A) Oils (B) Polyesters (C) Waxes (D) Terpenoids
Description : The Iodine number of essential fatty acids of vegetable oils: (A) High (B) Very high (C) Very low (D) Low
Description : Oils having more than 50 % polyunsaturated fatty acids include all of the following except (A) Groundnut oil (B) Soyabean oil (C) Sunflower oil (D) Safflower oil
Description : The basic constituent of vegetable oils is (A) Triglyceride (B) Fatty acids (C) Fatty alcohol (D) Mono esters
Last Answer : (A) Triglyceride
Description : Assertion `:-` Fats are transported into the lacteals in the villi. Reason `:-` Fatty acids are insoluble in water.
Last Answer : Assertion `:-` Fats are transported into the lacteals in the villi. Reason `:-` Fatty acids are ... False. D. If both Assertion & Reason are false.