Compounds that contain a fused ring system are called these have three 6-membered rings and one 5-membered ring. some of these compounds are found in biological membranes. are the building blocks for many lipids, and they generally contain an even number of carbon atoms and an unbranched hydrocarbon chain. are formed when a carbohydrate is glycosidically linked to a hydroxyl group of a lipid. examples include gangliosides and cerebrosides. these are also found in biological membranes. are the storage form of lipids, accumulating in adipose tissue, and they can be metabolic fuel. these compounds have a polar part, made of three ester groups, and a nonpolar fatty acid tall. made of a long-chain amino alcohol joined, either by a glycositic linkage or a phosphodiester linkage, to a fatty acid. these do not contain they are abundant in the nervous system. when glycerol is esterified to two fatty acids and a phosphoric acid molecule a is formed. these are found in biological membranes.

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Nconcentration refers to the molar concentration of an ion in solution. it may be identical to, or greater or less than, the molar concentration of the compound containing the ion that was used to make the solution. for soluble salts, the molarity of a particular ion is equal to the molarity of that compound times the subscript for that ion. for example, 1 m of alcl3 is 1 m in al3+ and 3 m in cl−. 1 m of (nh4)2so4 is 2 m in nh4+ and 1 m in so42−. part a what is the concentration of k+ in 0.15 m of k2s? view available hint(s) nothing m m part b if cacl2 is dissolved in water, what can be said about the concentration of the ca2+ ion? view available hint(s) if is dissolved in water, what can be said about the concentration of the ion? it has the same concentration as the cl− ion. its concentration is half that of the cl− ion. its concentration is twice that of the cl− ion. its concentration is one-third that of the cl− ion. part c a scientist wants to make a solution of tribasic sodium phosphate, na3po4, for a laboratory experiment. how many grams of na3po4 will be needed to produce 550 ml of a solution that has a concentration of na+ ions of 0.700 m ? express your answer numerically in grams. view available hint(s) mass of na3po4 n a 3 p o 4 = nothing g provide feedback

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption