Biochemistry (Lipids)

Question 1

saturated fatty acids

Answer 1

do not contain carbon-carbon double bond. their shape is linear

Question 2

unsaturated fatty acids

Answer 2

contain 1 carbon-carbon double bond they have a bent shape

Question 3

polyunsaturated fatty acids

Answer 3

contain 2 or more carbon-carbon double bonds

Question 4

Triglyceride

Answer 4

Triglyceride are formed with glycerol and 3 fatty acid molecules.
a condensation reaction happens which creates 3 H20 as byproducts
Triglyceride includes the 3 fatty acids

Question 5

Lipids functions

Answer 5

energy storage- lipids are high in energy

membrane structure- phospholipids form bilayer which keeps plasma membranes stable. cholesterol is soluble in lipids

thermal insulation- good thermal insulators. they do not conduct heat easily, keeps animals warm.

electrical insulation- good electrical insulators.do not conduct electricity. lipids layers insulate nerve cells.

Question 6

lipids vs carbohydrates

Answer 6

lipids are more suitable for long term energy storage because it has higher energy per gram and it takes longer to break down lipids.
triglycerides are stored in specialized cells called adipose cells. gylcogen is stored in muscle tissue and liver.