Question

Treating a triglyceride with alkali causes what change?

a. hydration

b. solidification

c. dehydrogenation

d. saponification

e. precipitation

Do melting points of fatty acids [a. increase or b. decrease] with increasing chain length?

Glycerophospholipids are important in membrane formation. In addition to fatty acids and glycerol they contain ____________________ and ____________________

Cholesterol is a precursor for:

a. prostaglandins

b. glucocorticoids

c. phosphatidyl choline

e. sphingomyelin

Answer 1

Q1.

saponification is the process in which a triglyceride will react with a base and form a SOAP

This molecule will be able to form miscelles

Q2.

fatty acids --> increase their melting point as they increase the chain lenght

this is mainly because of the higher interacitons between molecules

Dispersion/london forces increases

Q3

Glycerophospholipids --> they form a polar and a nonpolar membrane, they pair up each other inorder to favour a "structure" in the cell

hydrophobic heads

hyrophilic tails

Q4.

cholesterol is precursor for sphingomyelin