Biochemistry - lipids

Question 1

what are the two types of lipids?

Answer 1

triglycerides and phospholipids

Question 2

what are triglycerides made up of?

Answer 2

3 fatty acids (tri)
1 glycerol molecule (glyceride)

Question 3

what are phospholipids made up of?

Answer 3

2 fatty acids
! glycerol molecule
a phosphate group

Question 4

what property does the phosphate head have in a phospholipid?

Answer 4

its hydroPHOBIC

Question 5

properties of a triglyceride

Answer 5

• electrical and thermal insulator
• waterproofing and buoyancy
• high energy c-c and c-h bonds

Question 6

are triglycerides polymers ?

Answer 6

no they are macromolecules

Question 7

what are saturated fats broken down into?

Answer 7

Low Density Lipoproteins (LDLs)

Question 8

what are unsaturated fats broken down into?

Answer 8

High Density Lipoproteins (HDLs)

Question 9

what are lipids?

Answer 9

a wide group of molecules that will dissolve in organic solvents

Question 10

what enzyme breaks down lipids?

Answer 10

ligase

Question 11

implications of saturated & unsaturated fats

Answer 11

contributory factor in heart disease.
Sat Fats raise the LDL cholesterol level increasing likelihood of atheroma’s developing