a) The carbon skeleton of amino acids can be oxidized via the tricarboxylic acid cycle
b) Phosphatidylcholine and phosphatidylserine seldom align against each other in a phospholipids bilayer because of repulsion between their head groups
c) polysaccharides are water soluble if their component monosaccharides are water solube. Examples can be found in glycogen and glycosaminoglycans.
Urgent!!!!!~ 請指出以下三條statement正確與否, 如果有錯, 請解釋
2006-12-14 4:24 am
回答 (1)
2006-12-14 10:06 am
✔ 最佳答案
*請搵 marking 作實*a. No. Only the alpha-Carbon of amino acids can be oxidized by the TCA cycle. Carbon skeletons are "chopped off".
b. Not sure... but data as follows: at pH7, the net charge of Phosphatidylcholine is 0 while the net charge of phosphatidylserine is -1.
c. No, Solubility of polysaccharides are based on the type of linkage between component monosaccharides.
(同學是 biochem 本科生吧 = =')
參考: Lehninger Principles of Biochemistry, 3rd Ed.
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