28. Which of the following statements about the reaction shown below is true? Am
ID: 141157 • Letter: 2
Question
28. Which of the following statements about the reaction shown below is true? Amount of energy neleased Products Course of seaction a. It is an endergonic reaction. b. The reactants have less energy than the products c. G is negative. d. The reaction can be reversed without the addition of energy e. It is an anabolic reaction. 29. The "building blocks" of polysaccharides areand the blocks are covalently linked together by a. glycerol and fatty acids; glycosidic linkages b. amino acids; triple bonds c. monosaccharides; glycosidic linkages d. disaccharides; triple bonds e. oligosaccharides; gycosidic linkages 30. In human muscle cells, the fermentation process produces a. lactic acid. b. 12 moles of ATP c. pyruvic acid. d. an excessive amount of energy e. None of the above 31. Oils melt at a lower temperature than fats because a. oils and fats are not the same type of macromolecule. b. fats contain more saturated fatty acids than oils. c. fats contain more unsaturated fatty acids than oils d. oils are made by plants. e. fats are common in animals. 32 A phospholiald difers from a tiglyceride in that phospholipids a. are amphipathic. b. are not derivatives of glycerol. c. do not have both hydrophilic and hydrophobic parts. d. are used to store energy for the cell. e. do not contain fatty acids.Explanation / Answer
Ans28. (c). G is negative.
It is an exergonic reaction and change in gibbs free energy is negative.
Ans29. (c) Monosaccharide; glycosidic linkages.
Polysaccharides are long chains of monosaccharides linked by glycosidic bonds.
Ans30. (a) lactic acid.
The fermentation process in muscle cells produces lactic acid as a waste product.
Ans31. (b) Fats contain more saturated fatty acids than oils.
Melting points are lower for unsaturated fatty acids(double bond) than saturated fatty acids.(single bond)
Ans32. (a) are amphipathic.
Amphipathic molecules have both hydrophilic and hydrophobic parts.
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