A. Lipids are biomolecules that are soluble in solvents. b. A triterpene contains carbons and units, whereas a sesquiterpene contains carbons and has units.
c. Tetracyclic lipids composed of three six-membered and one five-membered ring are .
d. Phospholipids are lipids that contain a phosphorus atom.
e. A group of biologically active compounds containing 20 carbon atoms derived from arachidonic acid are called .
f. Triacylglycerols, or trigylcerides, are that produce glycerol and molecules of fatty acid upon hydrolysis.

Explanation:

a. Lipids are biomolecules that are soluble in organic solvents.

b. A triterpene contains 30 carbons and six isoprene units, whereas a sesquiterpene contains 15 carbons and has three isoprene units.

c. Tetracyclic lipids composed of three six-membered and one five-membered ring are steroids .

d. Phospholipids are hydrolyzable lipids that contain a phosphorus atom.

e. A group of biologically active compounds containing 20 carbon atoms derived from arachidonic acid are called Eicosanoids .

f. Triacylglycerols, or trigylcerides, are esters that produce glycerol and three molecules of fatty acid upon hydrolysis.

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