BIOCHEMISTRY LECTURE / FIRST SEMESTER
LIPIDS
LEARNING OBJECTIVES
SIMPLE LIPIDS: WAXES
I. Explain what makes a compound a lipid
II. Describe the structure of fatty acids and explain how Waxes
- Esters produced by combining fatty acids with long
saturated, monounsaturated and polyunsaturated differ
chain alcohols
from one another
→ typically the fatty acid residue in a wax has
III. Know the different classes of lipids and how do they differ
between 14 to 36 carbon atoms and the alcohol
from one another residue has between 16 to 30 carbon atoms.
IV. Identify the molecules used to make waxes and describe
the makeup triglycerides
V. Identify the basic steroid structure and list important
members of this class of lipids
VI. Name the three types of eicosanoids and their biological
functions
VII. Describe the makeup of cell membrane and explain how
various compound cross the membrane
LIPIDS
Are organic substances made up of fatty acids and their SIMPLE LIPIDS: FATS & VEGETABLE OILS
naturally existing compounds and derivatives
Animal Fats and Vegetable Oils
Fats and other molecules that are insoluble in water
- Also known as triglycerides
Properties that must be met:
- Three fatty acid residues are joined to a glycerol
- The substance must be insoluble in water
residue by ester bonds
- The substance must be soluble in nonpolar solvents
- Usually contain two or three different fatty acid
- The substance must be found in biological system
residues
- Classification is dependent on the fatty acid
IMPORTANCE OF LIPIDS residues in its structure
it serves as an efficient source of energy
it serves as insulators
they are cellular constituent
they are involved in the absorption of fat-soluble
vitamins (vitamins A, D, E and K)
lipoproteins are carriers of triglycerides, cholesterol,
phospholipids
CLASSIFICATION OF LIPIDS
Simple Lipids
– Are esters of fatty acids with various alcohol
– Fats and oils & waxes
Complex Lipids
- Are also known as compound lipids
– Are composed of fatty acids, alcohol and
additional group
– Phospholipids and glycolipids
Precursor and Derived Lipids
– Lipids that are derived from other substance
– Steroids and eicosanoids
SOPHIA NICOLE POSERIO MACAM
UNIVERSIDAD DE MANILA
BSN- 14
LIPIDS
LEARNING OBJECTIVES
SIMPLE LIPIDS: WAXES
I. Explain what makes a compound a lipid
II. Describe the structure of fatty acids and explain how Waxes
- Esters produced by combining fatty acids with long
saturated, monounsaturated and polyunsaturated differ
chain alcohols
from one another
→ typically the fatty acid residue in a wax has
III. Know the different classes of lipids and how do they differ
between 14 to 36 carbon atoms and the alcohol
from one another residue has between 16 to 30 carbon atoms.
IV. Identify the molecules used to make waxes and describe
the makeup triglycerides
V. Identify the basic steroid structure and list important
members of this class of lipids
VI. Name the three types of eicosanoids and their biological
functions
VII. Describe the makeup of cell membrane and explain how
various compound cross the membrane
LIPIDS
Are organic substances made up of fatty acids and their SIMPLE LIPIDS: FATS & VEGETABLE OILS
naturally existing compounds and derivatives
Animal Fats and Vegetable Oils
Fats and other molecules that are insoluble in water
- Also known as triglycerides
Properties that must be met:
- Three fatty acid residues are joined to a glycerol
- The substance must be insoluble in water
residue by ester bonds
- The substance must be soluble in nonpolar solvents
- Usually contain two or three different fatty acid
- The substance must be found in biological system
residues
- Classification is dependent on the fatty acid
IMPORTANCE OF LIPIDS residues in its structure
it serves as an efficient source of energy
it serves as insulators
they are cellular constituent
they are involved in the absorption of fat-soluble
vitamins (vitamins A, D, E and K)
lipoproteins are carriers of triglycerides, cholesterol,
phospholipids
CLASSIFICATION OF LIPIDS
Simple Lipids
– Are esters of fatty acids with various alcohol
– Fats and oils & waxes
Complex Lipids
- Are also known as compound lipids
– Are composed of fatty acids, alcohol and
additional group
– Phospholipids and glycolipids
Precursor and Derived Lipids
– Lipids that are derived from other substance
– Steroids and eicosanoids
SOPHIA NICOLE POSERIO MACAM
UNIVERSIDAD DE MANILA
BSN- 14
