A. Chromatin
B. Glucose
C. Protein
D. Phospholipids
E. Polysaccharides
2007-07-20 17:11:44 · 5 answers · asked by ♥Anonymous♥ 2 in Science & Mathematics ➔ Biology
D. Phospholipids
2007-07-21 07:46:47 · answer #1 · answered by Anonymous · 0⤊ 0⤋
D is the answer.
The cell membrane consists of three classes of amphipathic lipids: phospholipids, glycolipids, and steroids. The relative composition of each depends upon the type of cell, but in the majority of cases phospholipids are the most abundant.
The fatty acid chains in phospholipids and glycolipids usually contain an even number of carbon atoms, typically between 14 and 24. The 16- and 18-carbon fatty acids are the most common. Fatty acids may be saturated or unsaturated, with the configuration of the double bonds nearly always cis. The length and the degree of unsaturation of fatty acids chains have a profound effect on membranes fluidity.
2007-07-20 20:22:00 · answer #2 · answered by Aseel 4 · 0⤊ 0⤋
the plasma membrane (PM) is a protective outer coating. The phospholipid bilayer within the PM prevent some molecules from entering or leaving a cell. So the answer is D. Once you understand the organisation of a cell, the function is easy. Cheers!.
2007-07-20 19:46:48 · answer #3 · answered by aussiebudz 4 · 0⤊ 0⤋
D. Phospholipids
2007-07-20 17:34:22 · answer #4 · answered by BP 7 · 0⤊ 0⤋
D. The membrane's base is a bilayer of phospholipids.
2007-07-20 17:25:19 · answer #5 · answered by ecolink 7 · 0⤊ 0⤋