Flashcards
Cell membrane
Flashcards do conjunto (8)
- 1How do unsaturated fatty acids affect the cell membrane structure?Make them fluid-like rather than rigid
- 2What do the proteins and carbohydrates on the outer surface communicate with?Hormones and neurotransmitters
- 3In what percentages are proteins and lipids in the membrane and how are they held together?50% lipids, 50% proteins
Held together by hydrogen bonds - 4Percentage of the different types of lipids75% phospholipids
5% glycolipids
20% cholesterol - 5Glycocalyx: definition, composition & function- carbohydrate coat covering the surface of RBC
- formed by oligosaccharides of glycolipids & transmembrane glycoproteins
- protects the cell surface & is the point of cell recognition & blood type - 6Lipid bilayer is permeable to what types of molecules?nonpolar, uncharged molecules like oxygen, CO2, steroids
- 7Which substances are more concentrated outside the cell and inside the cell?Outside = oxygen & Na+
Inside = CO2 & K+ - 8Diffusion through the lipid bilayer is important for...absorption of nutrients & excretion of wastes
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- Chemistry FlashCards sobre Cell membrane, criado por travel_bug em 29-09-2013.
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- travel_bug
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