Lipids in U2.4 cells

Words:

lipid[' l?p?d] Lipids

N any of the large group of organic compounds that is esters of fatty acids (simplelipids, such as fats and waxes ) or closely related substances (compound lipids, such as phospholipids): usually insoluble in water but soluble In alcohol and other organic solvents. They is important structural materials in living organisms lipids (Former name lipoid)

Fat fat

Fat is a substance contained in foods such as meat, cheese, and butter which forms an energy store in your body.

Phospholipid/?f?sf?? l?p?d/phospholipids

Composed of fatty acids, phosphoric acid, and a nitrogenous base:important constituents of all membranes

Sterol sterols [' st?? R?l; ' Ster?l]

Cholesterol [k? ' LEST?R?L] Cholesterol

Cholesterol is a substance so exists in the fat, tissues, and blood of all animals. Too much cholesterol in a person ' s blood can cause heart disease.

Hormone hormones, hormones [' H?? M?? N

A hormone is a chemical, usually occurring naturally in your body, which makes an organ of your body do something.

composition :

Main element C,h,o, some lipids contain p,n

Insoluble in water, soluble in fat-soluble organic solvents.

Common species;

Fats, phospholipids, sterols

Role

1. Lipids exist in all cells and are important organic compounds that make up cells and organisms.

2. Fat is a good energy storage material for cells. Can be decomposed and utilized when life activities are needed.

3. Thermal insulation function: Good insulator.

4. Buffer the pressure to protect the internal organs.

Phospholipid:

Constitute an important component of the cell membrane. It is also an important ingredient in the formation of various cell membranes.

It is widely found in human and animal brains, eggs, liver, and soy seeds.

Solid alcohols:

including cholesterol, sex hormone and vitamin D.

Cholesterol : constitutes an important component of the cell membrane. Participates in lipid transport in the bloodstream.

Too much intake will be deposited on the wall of the blood vessels, clogging the blood vessels, crisis life.

Sex hormones : Promote the development of human and animal genital organs, as well as the formation of germ cells.

Vitamin D: Promotes the absorption of calcium and phosphorus in the gut of humans and animals.

Biological macromolecules are framed by carbon chains.

Biological macromolecules are monomer poly-polymers.

Why is the equivalent of fat more energy than sugar, but not the main energy substances used by organisms?

In the human body the order of substance use is this: carbohydrate fat protein
1. Because the carbohydrate conversion is faster to be used by the human body
2. Some cells can only metabolize carbohydrates and not metabolize fats (brain cells can only use sugars to decompose to gain energy)
3. The oxidation of fat requires a large amount of oxygen, while the sugar in the case of oxygen-free oxygen can be oxidized,

Lipids in U2.4 cells